Updated on 2024/07/28

Information

 

写真a

 
YAMAMOTO NAOJI
 
Organization
Faculty of Engineering Sciences Department of Advanced Energy Science and Engineering Professor
School of Engineering (Joint Appointment)
Interdisciplinary Graduate School of Engineering Sciences Department of Interdisciplinary Engineering Sciences(Joint Appointment)
Title
Professor
Profile
I have been studying advanced space propulsions, especially, electric propulsion, for using as a deep space probe. I have been investigating the mechanism of plasma production and loss in order to improve the thrust performance of these propulsion.
External link

Degree

  • Doctor of engineering

Research History

  • なし

    なし

  • なし

Research Interests・Research Keywords

  • Research theme:ホールスラスタの長寿命化に関する研究

    Keyword:電気推進、イオン源、不安定性、プラズマ

    Research period: 2007.4

  • Research theme:Improvement of an ion engine performance

    Keyword:Electric propulsion, plasma, measurement

    Research period: 2005.4

  • Research theme:高周波プラズマの特性測定

    Keyword:水、プラズマ、RF、ICP

    Research period: 2004.9

  • Research theme:Physics in Hall thrusters

    Keyword:Hall thruster

    Research period: 2004.4

  • Research theme:Development of a miniature microwave discharge ion thruster

    Keyword:Space propulsion, electric propulsion, Ion beam source, ion thruster

    Research period: 2004.4

Awards

  • 第11回プラズマ応用科学会 論文賞

    2013.3   プラズマ応用科学会   論文「イオン加速グリッド損耗解析におけるメッシュサイズおよび時間幅の検討」

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    「イオン加速グリッド損耗解析におけるメッシュサイズおよび時間幅の検討」 として以下のことを明らかにした。
    The JIEDI code (JAXA Ion Engine Development Initiative) is a numerical analysis code for the life evaluation of an ion thruster in order to reduce the life time evaluation cost. For the improvement of this code, appropriate time step and mesh size were investigated. Calculations were conducted on a miniature ion thruster that has been developed in Kyushu University. The calculation cost and the number of sputtered atoms were measured for various numbers of division; various mesh size in the radial direction. The calculation cost, the number of sputtered atoms, the minimum potential and life time were measured for several time steps. When the number of divisions is larger than 24, the number of sputtered atoms converge to 2.2×1011atoms/sec, and the calculation cost is proportional to the cube of the number of divisions. The calculation cost is reduced when the time step is increased, however, if the time step is larger than the critical value, 15% in this study, the life time was overestimated. Considering tradeoff between the accuracy and calculation cost, the appropriate number of divisions in the radial direction is about 24 and the rate of removal of mesh is about 5.0[%].
    この結果として、本論文が第11回プラズマ応用科学会 論文賞を受賞した。

  • 平成23年度若手科学者賞

    2011.4   文部科学省   小型衛星への搭載を目指した次世代推進の有力な候補である小型イオンエンジンの研究・開発に取り組み, NASAが開発中の小型エンジンと比肩する世界最高性能のエンジンの開発に成功した.この成果は萌芽段階にある小型衛星を利用した宇宙開発に爆発的な前進をもたらすと期待される.

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    宇宙利用の敷居を下げる革新技術として注目を集める超小型衛星ではあるが、そのサイズの制約ゆえに推進機は搭載できておらず、現状では大型衛星を脅かす存在とはなっていない。この現状を打破し超小型衛星の性能を飛躍的に向上させるためには、小型・高性能の次世代推進機が必要不可欠である。
    氏は、次世代推進機の有力な候補である小型イオンエンジンの研究・開発に取り組み、その成果として推力0.7 mN、電力から推進力への変換効率57%と、NASAが開発中のエンジンと比肩する世界最高性能のエンジンの開発に成功した。
    本研究成果は、超小型衛星の性能を飛躍的に向上させ、これまで不可能であった小型衛星による月探査や自己廃棄が可能になるなど、萌芽段階にある小型衛星を利用した宇宙開発に爆発的な前進をもたらすと期待される

  • 第19回(平成21年度)航空宇宙学会奨励賞

    2010.4   日本航空宇宙学会   小型イオンスラスタの推進性能における形状依存性

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    小型イオンスライスタの推進性能における形状依存性


    The effects of antenna shape and magnetic field configuration on thrust performance in a 30 W class miniature microwave discharge ion thruster were investigated with the objective of improving its thrust performance. The ion beam currents were measured for three different antenna configurations: disc, star, and cross. The results showed that the optimum antenna shape depends on the desired mass flow level because of the tradeoff between microwave-plasma coupling efficiency and surface area recombination. The ion beam current with various magnitude of magnetic field was measured, since magnetic confinement and microwave-plasma coupling could be affected by the magnetic field configuration. The ion beam current was increased with increasing the number of magnets, though under too much magnitude of magnetic field, the engine cannot be ignited. So, there is an optimum magnitude of magnetic field. The thrust performance of the miniature microwave discharge ion thruster, i.e., propellant utilization, and ion beam production cost were 0.67 and 660 W/A, respectively, at mass flow rate of 0.018 mg/s, and incident microwave power of 8 W.

  • 2009 Best poster award, 2009 Society of Vacuum Coaters Tech-Conference

    2009.4   2009 Society of Vacuum Coaters TechCon   Laser-Based Sensor for Real Time Sputter Monitoring and End Point Detection in Ion Beam Etch Systems

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    CRDS法を用いて、多層レイヤーの各層の終わりを定量的に知る方法を新たに考案して、実証した

  • 平成23年度科学技術分野の文部科学大臣表彰・若手科学者賞

  • 2009 Best poster award, 2009 Society of Vacuum Coaters Tech-Conference

  • Special Encouragement by Japan Society of Aeronautical and Space Sciences, 2009

  • The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology,The Young Scientists’ Prize, 2011

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Papers

  • Portable Thomson scattering system for temporally resolved plasma measurements under low density conditions Reviewed International journal

    @Yamamoto N., Yalin A.P.

    Review of Scientific Instruments   95 ( 31 )   2024.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI 10.1063/5.0180534

  • Sequential Prediction of Hall Thruster Performance Using Echo State Network Models Reviewed International journal

    #Kansei ITO, @Naoji YAMAMOTO, @Kai MORINO

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   Volume 67 ( Issue 1 )   1 - 11   2024.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI:doi:10.2322/tjsass.67.1

  • Observation of Plasma Turbulence in a Hall Thruster Using Microwave Interferometry Reviewed International journal

    @Naoji Yamamoto and #Naoya Kuwabara, Daisuke Kuwahara, Shinatora Cho, @Yusuke Kosuga, Guilhem Dif Pradalier

    Journal of Propulsion and Power   39 ( 6 )   849 - 855   2023.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2514/1.B38711

  • Electron Density Measurement Inside a Hall Thruster Using Microwave Interferometry Reviewed International journal

    #Naoya Kuwabara, #Masatoshi Chono , @Naoji Yamamoto, Daisuke Kuwahara

    Journal of Propulsion and Power   2021.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2514/1.B38163

    Repository Public URL: http://hdl.handle.net/2324/4371074

  • Measurement of xenon plasma properties in an ion thruster using laser Thomson scattering technique Reviewed International journal

    Naoji Yamamoto, KENTARO TOMITA, Kensaku Sugita, Tomoaki Kurita, Hideki Nakashima, Kiichiro Uchino

    REVIEW OF SCIENTIFIC INSTRUMENTS   83 ( 7 )   2012.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.4737144

  • Temperature Measurement in a Radio Frequency Electro-thermal Thruster by Integrated Cavity Output Spectroscopy Reviewed International journal

    N. Yamamoto, J Shimokawatoko, M. Oya and H. Nakashima

    Frontier of Applied Plasma Technology   4 ( 1 )   2011.1

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    Language:English  

  • Measurements of electron density and temperature in a miniature microwave discharge ion thruster using laser Thomson scattering technique,and Technology Reviewed International journal

    19 ( 4 )   2010.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0963-0252/19/4/045009

  • Sputter Erosion Sensor for Anode Layer-Type Hall Thrusters Using Cavity Ring-Down Spectroscopy Reviewed International journal

    N. Yamamoto, L. Tao,B. Rubin, J.D. Williams and A.P. Yalin

    Journal of Propulsion and Power   26 ( 1 )   2010.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2514/1.44784

  • Single-mode delivery of 250 nm light using a large mode area photonic crystal fiber Reviewed International journal

    N. Yamamoto, L. Tao, and A.P. Yalin

    Optics Express   17 ( 19 )   2009.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1364/OE.17.016933

    Other Link: http://www.opticsinfobase.org/abstract.cfm?uri=oe-17-19-16933

  • Effects of Magnetic Field Configuration on Thrust Performance in A Miniature Microwave Discharge Ion Thruster Reviewed International journal

    Naoji Yamamoto, Shinya Kondo, Takayuki Chikaoka, Hirokazu Masui and Hideki Nakashima

    JOURNAL OF APPLIED PHYSICS.   2007.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.2822456

  • Antenna Configuration Effects on Thrust Performance of Miniature Microwave Discharge Ion Engine Reviewed International journal

    N. Yamamoto, H. Masui, H. Kataharada, H. Nakashima, Y. Takao,

    J. Propulsion and Power,   2006.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2514/1.18833

    Repository Public URL: http://hdl.handle.net/2324/5853

  • Discharge Current Oscillation in Hall Thrusters Reviewed International journal

    Naoji Yamamoto, Kimiya Komurasaki and Yoshihiro Arakawa

    JOURNAL OF PROPULSION AND POWER   21 ( 5 )   870 - 876   2005.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2514/1.12759

    Repository Public URL: http://hdl.handle.net/2324/4209

  • アノードレイヤ型ホールスラスタの作動特性 Reviewed

    山本直嗣, 中川貴史, 小紫公也, 荒川義博

    日本航空宇宙学会誌和文論文論文集   2003.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    Repository Public URL: http://hdl.handle.net/2324/16994

  • Investigation of Energy-Scaling of Thrust Performance for Laser Fusion Rocket Reviewed International journal

    #T. Inatomi, @N. Yamamoto, H. Nakashima, Y. Mori, T. Ise, S. Murata, K. Yagi and @T. Morita

    Plasma and Fusion Research   18   2023.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: doi:10.1585/pfr.18.1404080

  • Prediction of Discharge Current Using Reservoir Computing in Electric Propulsion Reviewed International journal

    #Kansei ITO, @Naoji YAMAMOTO, @Kai MORINO

    Journal of Evolving Space Activities   1   論文ID: 3   2023.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.57350/jesa.3

  • Quantitative Evaluation of the Impulse-bit Generated in a Magnetic Thrust Chamber Reviewed International journal

    #Taiki INATOMI, @Taichi MORITA, @Naoji YAMAMOTO, @Hideki NAKASHIMA, @Tomihiko KOJIMA,@Eisuke KURAMOTO, @Masaki IKEBE, Atsushi SUNAHARA, Shinichi NAMBA, Yoshitaka MORI, Toshiyuki ISE, Kazuhiro YAGI, Tomoyuki JHOZAKI

    Journal of Evolving Space Activities   1   論文ID: 4   2023.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.57350/jesa.4

  • Feasibility study on reactive ion etching occurrence in EUV-induced photoionized hydrogen plasmas based on electron temperature and electron density measurements

    Kouichiro Kouge, Kentaro Tomita, Junya Hotta, Yiming Pan, Hiroaki Tomuro, Tatsuya Yanagida, Kiichiro Uchino, Naoji Yamamoto

    Japanese Journal of Applied Physics   2022.3

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    Language:Others   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/ac5d25

  • イオンエンジンの代替推進剤となる昇華性物質の探索—Search for Sublimable Materials as Alternative Propellants for Ion Engines

    中野, 正勝, 山本, 直嗣, 大川, 恭志, 船木, 一幸, NAKANO, Masakatsu, YAMAMOTO, Naoji, OHKAWA, Yasushi, FUNAKI, Ikkoh

    令和3年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2021   2022.1

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    Language:Japanese  

    令和3年度宇宙輸送シンポジウム(2022年1月13日-14日. オンライン開催)
    Space Transportation Symposium FY2021 (January 13-14, 2022. Online Meeting)
    資料番号: SA6000173070
    STEP-2021-031

  • 遺伝アルゴリズムによるイオンエンジングリッド設計および探索過程の可視化 Reviewed

    #井上 純武, #枝澤 友也, @山本 直嗣, @中野正勝

    航空宇宙技術   20   2021.11

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: DOI https://doi.org/10.2322/astj.20.47

  • イオンエンジンにおける複数台の電界放出型電子が中和性能に及ぼす影響 Reviewed

    #木下 順平, #白木 僚, @山本 直嗣, @中野 正勝, @大川 恭志,@ 船木 一幸

    日本航空宇宙学会論文集   69 ( 5 )   215 - 218   2021.10

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2322/jjsass.69.215

  • Position and Attitude Tolerances of Carbon Nanotube Field Emission Cathode as a Neutralizer in an Ion Engine System Invited Reviewed International journal

    #Jumpei KINOSHITA, #Ryo IKEDA, #Misaki ADACHI, #Ryo SHIRAKI, @Taichi MORITA, @Naoji YAMAMOTO, Masakatsu NAKANO, Yasushi OHKAWA, Ikkoh FUNAKI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   64 ( 5 )   288 - 291   2021.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.2322/tjsass.64.288

  • Time-resolved spatial profiles of electron density and temperature in hydrogen plasmas induced by radiation from laser-produced tin plasmas for extreme ultraviolet lithography light sources

    Kouichiro Kouge, Kentaro Tomita, Junya Hotta, Yiming Pan, Hiroaki Tomuro, Masayuki Morita, Tatsuya Yanagida, Kiichiro Uchino, Naoji Yamamoto

    Japanese Journal of Applied Physics   60 ( 6 )   066002 - 066002   2021.6

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    Language:Others   Publishing type:Research paper (scientific journal)  

    DOI: 10.35848/1347-4065/abfadc

  • Performance of a Miniature Hall Thruster and an In-house PPU Reviewed International journal

    #Masatoshi CHONO, @Naoji YAMAMOTO, Ryudo TSUKIZAKI, Takato MORISHITA, Kenichi KUBOTA, Shinatra CHO, Kiyoshi KINEFUCHI, Toru TAKAHASHI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   64 ( 3 )   189 - 192   2021.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI https://doi.org/10.2322/tjsass.64.189

  • プルーム画像を用いたニューラルネットワークによる ホールスラスタの放電電流予測 Reviewed

    #河津 誠人, #淵上 大貴, @山本 直嗣, @民田 太一郎

    航空宇宙技術   20   47 - 51   2021.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: DOI https://doi.org/10.2322/astj.20.47

    Repository Public URL: http://hdl.handle.net/2324/4377921

  • Anomalous Electron Transport in Hall Thrusters: Electric Field Fluctuation Measurement Reviewed International journal

    #Naoya KUWABARA, #Masatoshi CHONO, @Taichi MORITA, @Naoji YAMAMOTO

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   19 ( 1 )   81 - 86   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI https://doi.org/10.2322/tastj.19.81

    Repository Public URL: http://hdl.handle.net/2324/4377905

  • Optimization of Ion Thruster Grids Using JIEDI Code with Genetic Algorithm Invited Reviewed International journal

    #Atsumu INOUE, @Naoji YAMAMOTO, #Yusuke NAKAMURA, @Masakatsu NAKANO

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   19 ( 1 )   75 - 80   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI https://doi.org/10.2322/tastj.19.75

    Repository Public URL: http://hdl.handle.net/2324/4377911

  • Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters Invited Reviewed International journal

    #Egawa, Y., @Yamamoto, N., #Yamaguchi, A., @Morita, T

    REVIEW OF SCIENTIFIC INSTRUMENTS   91 ( 11 )   2020.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5127788

    Repository Public URL: http://hdl.handle.net/2324/4103905

  • Erosion sensor using time-resolved cavity ring-down spectroscopy for Hall thrusters

    Yusuke Egawa, Naoji Yamamoto, Atsushi Yamaguchi, Taichi Morita

    Review of Scientific Instruments   2020.11

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    Language:Others   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5127788

  • Application of a microwave cathode to a 200-W Hall thruster with comparison to a hollow cathode

    Takato Morishita, Ryudo Tsukizaki, Naoji Yamamoto, Kiyoshi Kinefuchi, Kazutaka Nishiyama

    ACTA ASTRONAUTICA   176   413 - 423   2020.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.actaastro.2020.06.049

  • Application of a microwave cathode to a 200-W Hall thruster with comparison to a hollow cathode Invited Reviewed International journal

    @Morishita, T., @Tsukizaki, R., @Yamamoto, N., @Kinefuchi, K., @Nishiyama, K.

    ACTA ASTRONAUTICA   176   413 - 423   2020.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.actaastro.2020.06.049

    Repository Public URL: http://hdl.handle.net/2324/4377904

  • Analysis of plasma detachment in the magnetic thrust chamber using full particle-in-cell simulation Reviewed

    Tomihiko Kojima, Taichi Morita, Naoji Yamamoto

    High Energy Density Physics   36   2020.8

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    Language:English  

    DOI: 10.1016/j.hedp.2020.100814

    Repository Public URL: http://hdl.handle.net/2324/4377903

  • Two-Dimensional Thomson Scattering Measurement for the Investigation of Electron and Ion Detachment from an External Magnetic Field

    Mariko Takagi, Taichi MORITA, Naoya SAITO, Masafumi EDAMOTO, Yutaro Itadani, Tomihiko KOJIMA, Youichi SAKAWA, Atushi SUNAHARA, Yoshitaka MORI, Tomoyuki JOHZAKI, Hideki NAKASHIMA, Naoji YAMAMOTO

    2019.9

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    Two-Dimensional Thomson Scattering Measurement for the Investigation of Electron and Ion Detachment from an External Magnetic Field

  • Investigation of Physical Phenomena inside Microwave Discharge Neutralizer Using Numerical Analysis Reviewed International journal

    Naruya Hiroike and Naoji Yamamoto

    Frontier of Applied Plasma Technology   12   7 - 12   2019.7

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  • Ion thruster operation with carbon nanotube field emission cathode Reviewed

    Naoji Yamamoto, Taichi Morita, Yasushi Ohkawa, Masakatsu Nakano, Ikkoh Funaki

    Journal of Propulsion and Power   35 ( 2 )   490 - 493   2019.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2514/1.B37214

  • Portable and noise-tolerant magnetic field generation system

    Masafumi Edamoto, Taichi Morita, Naoya Saito, Yutaro Itadani, Satoshi Miura, Shinsuke Fujioka, Hideki Nakashima, Naoji Yamamoto

    Review of Scientific Instruments   89 ( 9 )   2018.9

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    Portable and noise-tolerant magnetic field generation system
    © 2018 Author(s). We have successfully developed a portable pulsed magnetic field generation system incorporating a number of techniques to avoid the effects of noise, including shielding, a self-power capability, and a high-capability semiconductor switch. The system fits into a cubical box less than 0.5 m in linear dimensions and can easily be installed in experimental facilities, including noisy environments such as high-power laser facilities. The system can generate a magnetic field of several tesla sustainable for several tens of microseconds over a spatial scale of several centimeters. In a high-power laser experiment with Gekko-XII, the system operated stably despite being subjected to a high level of electrical noise from laser shots of 600 J.

    DOI: 10.1063/1.5049217

  • イオンスラスタにおけるイオンビーム抽出のデューティ比制御による可変時間平均推力システムの開発 Reviewed International journal

    16 ( 5 )   388 - 391   2018.7

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    DOI: 10.2322/tastj.16.388

  • Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket Reviewed

    Naoya Saito, Naoji Yamamoto, Taichi Morita, Masafumi Edamoto, Hideki Nakashima, Shinsuke Fujioka, Akifumi Yogo, Hiroaki Nishimura, Atsushi Sunahara, Yoshitaka Mori, Tomoyuki Johzaki

    Japanese Journal of Applied Physics   57   050303   2018.4

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    Experimental demonstration of ion extraction from magnetic thrust chamber for laser fusion rocket
    A magnetic thrust chamber is an important system of a laser fusion rocket, in which the plasma kinetic energy is converted into vehicle thrust by a magnetic field. To investigate the plasma extraction from the system, the ions in a plasma are diagnosed outside the system by charge collectors. The results clearly show that the ion extraction does not strongly depend on the magnetic field strength when the energy ratio of magnetic field to plasma is greater than 4.3, and the magnetic field pushes back the plasma to generate a thrust, as previously suggested by numerical simulation and experiments.

  • Thomson Scattering Measurement of Laser-Produced Plasma in a Magnetic Thrust Chamber Reviewed

    Itadani Yutaro, Morita Taichi, Saito Naoya, Edamoto Masafumi, Kojima Tomihiko, Takagi Mariko, Nagashima Keisuke, Fujioka Shinsuke, Yogo Akifumi, Nishimura Hiroaki, Sunahara Atushi, Mori Yoshitaka, Johzaki Tomoyuki, Nakashima Hideki, Yamamoto Naoji

    PLASMA AND FUSION RESEARCH   13   2018.3

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    Thomson Scattering Measurement of Laser-Produced Plasma in a Magnetic Thrust Chamber
    Laser fusion rocket is one of the candidate propulsion devices for Mars exploration. It obtains thrust from the interaction between plasma and magnetic field and this propulsion system is called magnetic thrust chamber. We constructed a spectrometer with high wavelength resolution of 35 pm to obtain plasma parameters by measuring ion feature of laser Thomson scattering from a laser-produced plasma in a magnetic thrust chamber. We obtain the plasma parameters such as electron temperature, electron density, and velocity as well as the plasma density structure showing the stagnation of the plasma by magnetic field. (C) 2018 The Japan Society of Plasma Science and Nuclear Fusion Research.

    DOI: 10.1585/pfr.13.1306016

  • Hall thruster development for Japanese space propulsion programs Reviewed

    Yushi Hamada, Junhwi Bak, Rei Kawashima, Hiroyuki Koizumi, Kimiya Komurasaki, Naoji Yamamoto, Yusuke Egawa, Ikkoh Funaki, Shigeyasu Iihara, Shinatora Cho, Kenichi Kubota, Hiroki Watanabe, Kenji Fuchigami, Yosuke Tashiro, Yuya Takahata, Tetsuo Kakuma, Yusuke Furukubo, Hirokazu Tahara

    Transactions of the Japan Society for Aeronautical and Space Sciences   60 ( 5 )   320 - 326   2017.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2322/tjsass.60.320

  • Magnetic reconnection experiment with an external magnetic field by using Gekko-XII laser

    Taichi MORITA, Satoshi MIURA, Masafumi EDAMOTO, Kentaro TOMITA, Yutaro ITADANI, Naoji YAMAMOTO, Shinsuke FUJIOKA, Youichi SAKAWA

    2017.9

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    Magnetic reconnection experiment with an external magnetic field by using Gekko-XII laser

  • Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle Reviewed International journal

    Taichi Morita, Masafumi Edamoto, Satoshi Miura, Atsushi Sunahara, Naoya Saito, Yutaro Itadani, Tomihiko Kojima, Yoshitaka Mori, Tomoyuki Johzaki, Yoshihiro Kajimura, Shinsuke Fujioka, Akifumi Yogo, Hiroaki Nishimura, Hideki Nakashima, Naoji Yamamoto

    Scientific Reports   7 ( 1 )   8910 - 8910   2017.8

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    Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
    We report an experimental demonstration of controlling plasma flow direction with a magnetic nozzle consisting of multiple coils. Four coils are controlled separately to form an asymmetric magnetic field to change the direction of laser-produced plasma flow. The ablation plasma deforms the topology of the external magnetic field, forming a magnetic cavity inside and compressing the field outside. The compressed magnetic field pushes the plasma via the Lorentz force on a diamagnetic current: j × B in a certain direction, depending on the magnetic field configuration. Plasma and magnetic field structure formations depending on the initial magnetic field were simultaneously measured with a self-emission gated optical imager and B-dot probe, respectively, and the probe measurement clearly shows the difference of plasma expansion direction between symmetric and asymmetric initial magnetic fields. The combination of two-dimensional radiation hydrodynamic and three-dimensional hybrid simulations shows the control of the deflection angle with different number of coils, forming a plasma structure similar to that observed in the experiment.

    DOI: 10.1038/s41598-017-09273-3

  • 5kW級ホールスラスタRAIJINの性能解析 Reviewed

    濱田 悠嗣, 朴 俊輝, 小紫 公也, 江川 雄亮, 山本 直嗣, 高畑 侑弥, 角間 徹生, 古久保 裕介, 田原 弘一

    日本航空宇宙学会論文集   65 ( 2 )   82 - 86   2017.4

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    A Hall thruster system for in-space propulsion has been developed as a part of a Japanese collaborative research and development project aiming at practical use of a high power anode layer type Hall thruster. Its thrust was measured at the ISAS/JAXA vacuum chamber facilities using a dual-pendulum thrust stand developed at the University of Tokyo. In the low specific impulse mode operation, thrust efficiency of 64% and thrust to power ratio of 80mN/kW were achieved. In the high specific impulse mode operation, the thruster was successfully operated at the acceleration voltage of up to 1,000V.

    DOI: 10.2322/jjsass.65.82

  • Thrust Performance in a 5 kW Class Anode Layer Type Hall Thruster Reviewed International journal

    Naoji Yamamoto, Kohei Takase, Yuya Hirano, Kimiya Komurasaki, Akira Kakami, Ryudo Tsukizaki, Satoshi Hosoda, Hitoshi Kuninaka, Shigeru Yokota

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan   14 ( No. ists30 (ISTS Special Issue: Selected papers from the 30th International Symposium on Space Technology and Science) )   Pb_183 - Pb_187   2017.2

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    DOI: http://doi.org/10.2322/tastj.14.Pb_183

  • Effect of orifice diameter on the performance of a miniature microwave neutralizer Reviewed

    Indranuj Dey, Naoji Yamamoto, Hideki Nakashima

    Transactions of the Japan Society for Aeronautical and Space Sciences   60 ( 4 )   259 - 262   2017.1

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    DOI: 10.2322/tjsass.60.259

  • Rayleigh scattering measurement of neutral atom number density downstream of a hall thruster under cold flow conditions Reviewed

    Masataka Iwamoto, Naoji Yamamoto, Taichi Morita, Hideki Nakashima, Kentaro Tomita, Kiichiro Uchino

    Transactions of the Japan Society for Aeronautical and Space Sciences   60 ( 5 )   327 - 330   2017.1

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    DOI: 10.2322/tjsass.60.327

    Repository Public URL: http://hdl.handle.net/2324/4377920

  • Development of a Miniature Microwave Discharge Thruster Reviewed International journal

    USHIO Koichi, TOYODA Yuji, YAMAMOTO Naoji, MORITA Taichi, NAKASHIMA Hideki

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   14 ( 30 )   pb_141 - pb_147   2016.12

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    Development of a Miniature Microwave Discharge Thruster
    <p>A miniature microwave discharge plasma thruster for micro satellites is under development, with the target power consumption, thrust and specific impulse of 10 W, 1 mN and 1000 sec, respectively. Thrust was estimated from the measured ion beam current and ion energy distribution function using an ion collector and a retarding potential analyzer. Several parameters, including antenna configuration, length of the discharge chamber and configuration, were optimized for the improvement of the thrust performance. The overall thrust was estimated to be 82 &mu;N at the incident microwave power of 10 W and the mass flow rate of 82 &mu;g/sec.</p>

    DOI: 10.2322/tastj.14.Pb_141

  • イオンエンジンの推力On‐Off制御の数値解析

    中野正勝, 山本直嗣, 船木一幸, 大川恭志

    プラズマ応用科学   24 ( 2 )   65‐72 - 72   2016.12

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  • ホールスラスタにおけるニューラルネットワークを用いた推力の 再構成 Reviewed

    淵上太貴 、森田太智,山本直嗣

    プラズマ応用科学   24 ( 2 )   84 - 88   2016.12

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  • Thrust Performance in Hall Thruster with Pulsating Operation Reviewed International journal

    Naoji Yamamoto, Takumi Ito, Haruki Takegahara, Hiroki Watanabe, Taichiro Tamida, Hiroyuki Osuga

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan   14 ( No. ists30 (ISTS Special Issue: Selected papers from the 30th International Symposium on Space Technology and Science) )   Pb_173 - Pb_176   2016.12

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    DOI: http://doi.org/10.2322/tastj.14.Pb_173

  • Measurement of Aluminum Erosion Rate by Cavity Ring-Down Spectroscopy Reviewed International journal

    YAMAGUCHI Atsushi, KIBE Atsushi, YAMAMOTO Naoji, MORITA Taichi, NAKASHIMA Hideki

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   14 ( No. ists30 (ISTS Special Issue: Selected papers from the 30th International Symposium on Space Tec )   Pb_111 - Pb_116   2016.11

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    Measurement of Aluminum Erosion Rate by Cavity Ring-Down Spectroscopy
    <p>A cavity ring-down spectroscopy method to measure sputter erosion and estimate the lifetime of electric propulsion systems was developed. We measured sputtered aluminum atoms from the acceleration grid of an ion thruster. An external-cavity diode laser was used as the probe laser to measure the aluminum transition line from ground state to upper state, at 394.512 nm (vacuum). The erosion rate of the acceleration grid was estimated to be 259 ± 99 ng/s. </p>

    DOI: 10.2322/tastj.14.Pb_111

  • Development of a magnetic thrust chamber for a laser fusion rocket Reviewed

    Edamoto Masafumi, Saito Naoya, Morita Taichi, Yamamoto Naoji, Sunahara Atsushi, Kawashima Ryosuke, Miura Satoshi, Itadani Yutaro, Nakashima Hideki, Fujioka Shinsuke, Yogo Akifumi, Nishimura Hiroaki, Mori Yoshitaka, Johzaki Tomoyuki

    52nd AIAA/SAE/ASEE Joint Propulsion Conference   2016.7

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    Development of a magnetic thrust chamber for a laser fusion rocket
    We have conducted numerical researches to validate a thrust vector control system for a laser fusion rocket. Proposed system is the multi coil magnetic thrust chamber. We used the two-dimensional radiation hydrodynamics code and the three-dimensional hybrid code to calculate a laser irradiation and an interaction between magnetic fields and plasmas, respectively. We have numerically succeeded in controlling the vector of plasma flow by changing of magnetic field configurations.

    DOI: 10.2514/6.2016-4684

  • Measurement of Electron and Neutral Atom Density Downstream of an Electric Propulsion Reviewed

    Yamamoto Naoji, Iwamoto Masataka, Morita Taichi, Nakashima Hideki

    52nd AIAA/SAE/ASEE Joint Propulsion Conference   2016.7

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    Measurement of Electron and Neutral Atom Density Downstream of an Electric Propulsion

    DOI: 10.2514/6.2016-5036

  • Plasma structure and energy dependence in a magnetic thrust chamber system Reviewed

    Taichi Morita, Naoji Yamamoto, R. Kawashima, N. Saito, M. Edamoto, S. Fujioka, Y. Itadani, T. Johzaki, S. Miura, Y. Mori, H. Nishimura, A. Sunahara, A. Yogo, H. Nakashima

    Journal of Physics: Conference Series   717 ( 1 )   2016.5

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    DOI: 10.1088/1742-6596/717/1/012071

  • Erosion rate measurement in ion thrusters using Cavity Ring-Down Spectroscopy technique Reviewed

    A. Yamaguchi, A. Kibe, Naoji Yamamoto, Taichi Morita, Hiroshi Nakashima, M. Nakano

    Journal of Instrumentation   11 ( 1 )   2016.1

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    DOI: 10.1088/1748-0221/11/01/C01079

  • The measurement of plasma structure in a magnetic thrust chamber Reviewed

    Ryosuke Kawashima, Taichi Morita, Naoji Yamamoto, Naoya Saito, Shinsuke Fujioka, Hiroaki Nishimura, Hiraku Matsukuma, Atsushi Sunahara, Yoshitaka Mori, Tomoyuki Johzaki, Hideki Nakashima

    Plasma and Fusion Research   11 ( 2 )   2016.1

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    DOI: 10.1585/pfr.11.3406012

  • Investigation of erosion and deposition in a microwave discharge neutralizer Reviewed

    Naoji Yamamoto, Yushi Maeda, Hideki Nakashima, Hiroki Watanabe, Ikkoh Funaki

    Transactions of the Japan Society for Aeronautical and Space Sciences   59 ( 2 )   100 - 103   2016.1

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    DOI: 10.2322/tjsass.59.100

  • Development of a miniature microwave electron cyclotron resonance plasma ion thruster for exospheric micro-propulsion Reviewed

    Indranuj Dey, Yuji Toyoda, Naoji Yamamoto, Hideki Nakashima

    REVIEW OF SCIENTIFIC INSTRUMENTS   86 ( 12 )   2015.12

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    DOI: 10.1063/1.4937353

  • Acceleration of Miniature Targets by Kilo-Tesla Magnetic Field Reviewed

    Naoya Saito, Hiroshi Tominaga, Ryosuke Kawashima, Taichi Morita, Naoji Yamamoto, Hideki Nakashima, Shinsuke Fujioka, Atsushi Sunahara, Yoshitaka Mori, Tomoyuki Johzaki

    Transactions of the JSASS / Aerospace Technology Japan   13   17 - 21   2015.6

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    Acceleration of Miniature Targets by Kilo-Tesla Magnetic Field
    The first demonstration of target acceleration by a strong magnetic field is conducted. Two miniature targets, a gold ball and a neodymium permanent magnet, are accelerated by a magnetic field. A magnetic-field strength as high as 1 kT is produced using a capacitor-coil in which two copper disks are connected by a single-turn coil, and the capacitor was driven by two beams from the GEKKO-XII high-power laser. The targets are accelerated by the interaction force between two magnetic moments: the target and the capacitor-coil. The velocity of the accelerated gold ball was estimated as 10 m/s from shadowgraphy images. In the case of the magnet, although the image could not be observed clearly due to the plasma generated around the magnet, it was confirmed that the magnet interacts with the magnetic field of the capacitor-coil.

    DOI: 10.2322/tastj.13.17

  • 電荷交換衝突を考慮した小型マイクロ波放電式電気推進器の性能評価 Reviewed

    牛尾康一, 豊田裕司, 山本 直嗣, 中島 秀紀

    プラズマ応用科学   23 ( 1 )   23 - 28   2015.6

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  • Performance Improvement of Hall Thrusters Using a Pulse-Synchronous Driver System Reviewed

    Taichiro Tamida, Hiroyuki Osuga, Naoji Yamamoto, Haruki Takegahara, Junichiro Aoyagi, Kyoichi Kuriki

    JOURNAL OF PROPULSION AND POWER   31 ( 3 )   956 - 961   2015.5

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    DOI: 10.2514/1.B35273

  • Development of a novel power processing unit for hall thrusters Reviewed

    Naoji Yamamoto, Haruki Takegahara, Junichiro Aoyagi, Kyoichi Kuriki, Taichiro Tamida, Hiroyuki Osuga

    IEEE Transactions on Plasma Science   43 ( 1 )   158 - 164   2015.1

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    DOI: 10.1109/TPS.2014.2370066

  • Diagnostics of Fireball by Discharge on the Surface of an Electrolyte Floating Particulates Invited Reviewed International journal

    Keisuke TANAKA, Ryosuke KAWASHIMA, Naoji Yamamoto, Taichi Morita, Hideki Nakashima

    Frontier of Applied Plasma Technology   2015.1

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  • Experimental investigation of microwave interaction with magnetoplasma in miniature multipolar configuration using impedance measurements Reviewed

    Indranuj Dey, Yuji Toyoda, Naoji Yamamoto, Hideki Nakashima

    PHYSICS OF PLASMAS   21 ( 9 )   2014.9

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    DOI: 10.1063/1.4894476

  • 小型マイクロ波放電型中和器の性能向上に関する研究 Reviewed

    Naoji Yamamoto, 平岡 義章, Hideki Nakashima

    日本航空宇宙学会論文集   62 ( 4 )   123 - 128   2014.8

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    DOI: 10.2322/jjsass.62.123

  • Development of a Low Power Multipole Confined Microwave Plasma Ion Thruster Reviewed International journal

    DEY Indranuj, TOYODA Yuji, HIRANO Kenji, YAMAMOTO Naoji, NAKASHIMA Hideki

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   12 ( No. ists29 )   Pb_7 - Pb_12   2014.3

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    Development of a Low Power Multipole Confined Microwave Plasma Ion Thruster
    A modified magnetic multipolar plasma source is developed and tested for application as an ion thruster for space propulsion. The configuration consists of eight samarium-cobalt bar-magnets, symmetrically surrounding a cylindrical discharge volume of 21 mm diameter, with their magnetization in the radial direction. A donut magnet is placed at one axial end of the discharge volume with its magnetization along the cylindrical axis. A short monopole antenna, coaxial with the donut magnet is used for launching microwaves in the discharge volume. The resulting magnetic configuration due to the radial and axial magnetic fields, help in generation and sustenance of microwave induced electron cyclotron resonance plasma. Ions are extracted from the plasma by high voltage grids, attached to the end, opposite to the donut magnet. Two different magnetic configurations obtained by reversing the magnetization direction of the donut magnet are compared. Three dimensional magnetic field simulations and ion saturation current measurements at various microwave frequencies are used to determine the optimum magnetic configuration. Ion beam current extraction measurements, using the grids is carried out. Typical ion beam current of 9.9 mA is obtained, with calculated thrust of 0.63 mN at 8 W for 1600 MHz, with a Xenon mass flow rate of 20 μg/s.

    DOI: 10.2322/tastj.12.Pb_7

  • A cavity ring-down spectroscopy sensor for real-time Hall thruster erosion measurements Reviewed

    B. C. Lee, W. Huang, L. Tao, Naoji Yamamoto, A. D. Gallimore, A. P. Yalin

    Review of Scientific Instruments   85 ( 5 )   2014.1

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    DOI: 10.1063/1.4879135

  • Effect of magnetic field strength on a magnetic thrust chamber system Reviewed

    Akihiro Maeno, Tomoyuki Hinaga, Naoji Yamamoto, Atsushi Sunahara, Shinsuke Fujioka, Hideki Nakasima

    Journal of Propulsion and Power   30 ( 1 )   54 - 61   2014.1

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    DOI: 10.2514/1.B34911

  • 小型マイクロ波プラズマ推進機の開発

    豊田裕司、牛尾康一, 山本直嗣、中島秀紀

    プラズマ応用科学   21 ( 2 )   31 - 36   2013.12

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  • Application of pulsed laser irradiation for removal of hydrogen retained in tungsten Reviewed

    Kentaro Hirata, Kenichiro Furumoto, Naoji Yamamoto, Tetsuo Tanabe

    Journal of Nuclear Materials   443 ( 1-3 )   298 - 301   2013.8

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    DOI: 10.1016/j.jnucmat.2013.07.047

  • Analysis of Laser Wavelength and Energy Dependences of the Impulse in a Magnetic Thrust Chamber System for a Laser Fusion Rocket Reviewed

    Akihiro MAENO, Naoji YAMAMOTO, Shinsuke FUJIOKA, Yoshitaka MORI, Atsushi SUNAHARA, Tomoyuki JOHZAKI, Hideki NAKASHIMA

    Transactions of Japan Society for Aeronautical and Space Sciences   56 ( 3 )   170 - 172   2013.5

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    Analysis of Laser Wavelength and Energy Dependences of the Impulse in a Magnetic Thrust Chamber System for a Laser Fusion Rocket
    Experiments using a pendulum thrust stand are performed to determine the dependences of the impulse on the laser wavelength and energy in a magnetic thrust chamber system for a laser fusion rocket. The impulse is generated by the interaction between a diamagnetic current in a laser-produced plasma and a magnetic field. The plasma is produced by irradiating a spherical polyacetal target with a single-beam glass laser (laser pulse duration: 1.3 ns; laser wavelengths: 1,053, 527 and 351 nm; laser energy: 30–900 J). The magnetic field is generated by a cylindrical neodymium permanent magnet (50 mm diameter and 40 mm long) placed in a position 33 mm from the target. Impulses in the range 0.02–10 mNs are measured using a pendulum thrust stand. The experiments reveal that the impulse for 2ω is similar to that for 3ω, and is larger than that for ω.

    DOI: 10.2322/tjsass.56.170

  • Demonstration Experiment of Magnetic Thrust Chamber for a Laser Fusion Rocket Reviewed International journal

    Masato Yasunaga, Akihiro Maeno, Naoji Yamamoto, Hideki Nakashima

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan,   2013.2

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    DOI: 10.2322/tastj.10.Pb_109

  • Kilotesla Magnetic Field due to a Capacitor-Coil Target Driven by High Power Laser Reviewed

    Shinsuke Fujioka, Zhe Zhang, Kazuhiro Ishihara, Keisuke Shigemori, Youichiro Hironaka, Tomoyuki Johzaki, Atsushi Sunahara, Naoji Yamamoto, Hideki Nakashima, Tsuguhiro Watanabe, Hiroyuki Shiraga, Hiroaki Nishimura, Hiroshi Azechi

    SCIENTIFIC REPORTS   3   2013.1

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    DOI: 10.1038/srep01170

  • Development of novel optical fiber system for cathodoluminescence detection in high voltage transmission electron microscope Reviewed

    Kenichiro Furumoto, Tetsuo Tanabe, Naoji Yamamoto, Takeshi Daio, Syo Matsumura, Kazuhiro Yasuda

    Materials Transactions   54 ( 5 )   854 - 856   2013

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    DOI: 10.2320/matertrans.M2013025

  • Numerical Analysis of Magnetic Thrust Chamber System for Laser Fusion Rocket Considering the Creation Process of Laser-Produced Plasma Reviewed

    Akihiro MAENO, Yoshihiro KAJIMURA, Atsushi SUNAHARA, Naoji YAMAMOTO, Masato YASUNAGA, Tomoyuki HINAGA, Tomonari HANAYA, Shinsuke FUJIOKA, Tomoyuki JOHZAKI, Yoshitaka MORI, Hideki NAKASHIMA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN   10 ( 28 )   Pb-71 - Pb-77   2012.8

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    Numerical Analysis of Magnetic Thrust Chamber System for Laser Fusion Rocket Considering the Creation Process of Laser-Produced Plasma
    The plasma behavior in a magnetic thrust chamber system for a laser fusion rocket is numerically simulated using a three-dimensional (3D) hybrid particle-in-cell (PIC) code and a one-dimensional (1D) radiation hydrodynamic code. The magnetic thrust chamber and an applied magnetic field with a suitable geometry generate an impulse from the interaction between the diamagnetic current in the laser-produced plasma and the magnetic field generated by a magnetic coil. A 1D radiation hydrodynamics code is used to compute the hydrodynamic evolution of a radiating plasma heated by laser beams or external radiation sources. By combining this code and a 3D hybrid PIC code, a series of numerical simulations are performed to investigate high-energy laser injection onto a fuel target and the ablated plasma behavior of the system. A thrust energy of 0.37 J and an impulse bit of 31.6 μNs are obtained for an incident laser energy of 4.0 J. This impulse bit could mostly be generated by interactions between a slowly expanding plasma (expansion velocity of ~20 km/s) and a magnetic field. To optimize this system, it is important to reduce the expansion velocity of the laser-produced plasma.

    DOI: 10.2322/tastj.10.Pb_71

  • Thomson scattering diagnostics in the plasma of an ion thruster Reviewed

    N. Yamamoto, Y. Hiraoka, K. Sugita, T. Kurita, K. Tomita, K Uchino, H. Nakashima

    Trans. Jpn. Soc. for Aeronautical and Space Sci., Aerospace Technol. Jpn.   10   Pb79   2012.8

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    Thomson scattering diagnostics in the plasma of an ion thruster

  • イオン加速グリッド損耗解析におけるメッシュサイズおよび時間幅の検討

    中村祐輔, 山本直嗣, 中島秀紀, 中野正勝

    プラズマ応用科学   20 ( 1 )   33 - 38   2012.6

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  • Thrust performance of a low power Hall thruster Reviewed International journal

    Naoji YAMAMOTO, Toru EZAKI and Hideki NAKASHIMA

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan,   9 ( ists28 )   2012.5

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  • High Efficiency Control Method for the Hall Thruster System through Constant Flow Rate Control by Power Supply Control Reviewed

    OSUGA Hiroyuki, KUROKAWA Fujio, TAMIDA Taichiro, YAMAMOTO Naoji

    IEICE transactions on communications   E-95-B ( 1 )   133 - 142   2012.1

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    High efficiency control method for the hall thruster system through constant flow rate control by power supply control
    We present a new power supply control method, which achieves constant flow Rate control for the thrust of a 20 mN-class Hall thruster. First, we present observations of a 20mN-class Hall thruster with oscillation-mode-map. We make a theoretical study of the thrust and experiments on electrical characteristics of the Hall thruster, and conclude that thrust, thrust efficiency and low frequency oscillation are clearly determined by the external control parameters, anode voltage, gas flow rate, and magnetic flux density. Second, we discuss how to control the power supplies to suppress the power consumption, especially when the operation or thruster conditions change temporarily during use. The new method will be a very important guideline for Hall thruster system design and operation, in particular making it easy to manage the power consumption in a satellite by controlling the thrust resources. As a result of performance experiments for a 20mN-class Hall thruster, over 36&#37; thrust efficiency of the Hall thruster was found to be sensitive to the anode voltage and applied magnetic flux density. The new power control method achieves constant flow rate control method of the thrust. The benefits are light weight and low cost.

    DOI: 10.1587/transcom.E95.B.133

  • ホールスラスタの振動マップの規格化と電力制御技術 Reviewed

    大須賀 弘行, 黒川 不二雄, 民田 太一郎, 山本 直嗣, 三浦 末志

    航空宇宙技術   Vol.11 ( No.1 )   2011.8

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  • Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket Reviewed

    Akihiro Maeno, Naoji Yamamoto, Hideki Nakashima, Shinsuke Fujioka, Tomoyuki Johzaki, Yoshitaka Mori, Atsushi Sunahara

    APPLIED PHYSICS LETTERS   99 ( 7 )   071501   2011.8

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    DOI: 10.1063/1.3626600

  • Development of Real-time Erosion Monitoring System for Hall Thrusters by Cavity Ring-Down Spectroscopy Reviewed International journal

    N. Yamamoto, L. Tao, A. P. Yalin

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan,   8 ( ists27 )   2011.3

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  • Plasma Properties in a Miniature Microwave Discharge Ion Thruster Reviewed International journal

    T. Ezaki, N. Yamamoto, T. Tsuru, Y. Kotani, H. Nakashima, N. Yamasaki, K. Tomita, and K. Uchino

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan,   8 ( ists27 )   2011.3

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  • Thomson-scattering diagnostics of plasmas produced in a miniature microwave discharge ion engine Reviewed

    Kentaro Tomita, Naoji Yamamoto, Yamasaki Naoto, Tsuru Teppei, Kiichiro Uchino, Nakashima Hideki

    Journal of Propulsion and Power   26 ( 2 )   381 - 383   2010.3

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    DOI: 10.2514/1.39145

  • 小型マイクロ波放電型イオンスラスタにおける磁場強度が電子の平均エネルギーへ及ぼす影響 Reviewed

    新谷將、金川隆保、山本直嗣、中島秀紀

    プラズマ応用科学   17 ( 2 )   2009.12

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  • Preliminary Experiments for Demonstrating Magnetic Nozzle Concept in Laser Fusion Rocket

    Akihiro Maeno, Hanaya Tomonari, Naoji Yamamoto, Hideki Nakashima, Shinsuke Fujioka, Atsushi Sunahara, Tomoyuki Johzaki, Yoshitaka Mori

    Proceedings of 31st International Electric Propulsion Conference   IEPC-2009-006   2009.9

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    Preliminary Experiments for Demonstrating Magnetic Nozzle Concept in Laser Fusion Rocket

  • レーザートムソン散乱法によるイオンスラスタ内部の電子温度・密度の計測 Reviewed

    江崎 徹、小谷優介、鶴哲平、山本直嗣、中島秀紀、富田健太郎、山崎尚人、内野喜一郎

    プラズマ応用科学   17 ( 1 )   2009.6

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  • Development of a Microwave Discharge Ion Thruster Using Argon Reviewed International journal

    Naoji YAMAMOTO, Makoto MIYOSHI, Yoshiyuki TAKAO and Hideki NAKASHIMA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES,SPACE TECHNOLOGY JAPAN   7 ( ists26 )   2009.5

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    DOI: 10.2322/tstj.7.Pb_119

  • Study of 2.5-10cm Size Microwave Discharge Ion Thruster Reviewed International journal

    Yoshiyuki TAKAO, Akihiro KUGIMIYA, Shinobu NAGAI, Naoji YAMAMOTO, Yoshihiro KAJIMURA and Hideki NAKASHIMA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, SPACE TECHNOLOGY JAPAN   7 ( ists26 )   2009.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2322/tstj.7.Pb_155

  • Development of Real-time Boron Nitride Erosion Monitoring System for Hall Thrusters by Cavity Ring-Down Spectroscopy Reviewed International journal

    Naoji YAMAMOTO, Azer P.YALIN, Lei TAO, Timothy B. SMITH, Alec D. GALLIMORE and Yoshihiro ARAKAWA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES,SPACE TECHNOLOGY JAPAN   7 ( ists26 )   2009.4

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    DOI: 10.2322/tstj.7.Pb_1

  • Numerical Analysis of the Plasma Behavior in a Miniature Microwave Discharge Ion Thruster Reviewed International journal

    Y. Kajimura, T. Kanagawa, N. Yamamoto, H. Nakashima,

    2009.1

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  • Cavity Ring-Down Spectroscopy Sensor for Ion Beam Etch Monitoring and End-Point Detection of Multilayer Structures Reviewed International journal

    L. Tao, N. Yamamoto, A.P. Yalin

    Review of Scientific Instruments   2008.12

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    DOI: 10.1063/1.2995765

  • 小型イオンスラスタの推進性能における形状依存性 Reviewed

    山本直嗣, 近藤 慎哉, 近岡 貴行, 金川 隆保, 中島 秀紀

    日本航空宇宙学会誌和文論文論文集   56 ( 655 )   2008.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.2322/jjsass.56.383

  • Sputtering measurements by cavity ring-down spectroscopy and application to electric propulsion and plasma engineering Reviewed

    A. P. Yalin, L. Tao, Naoji Yamamoto

    Quaternary International   2008

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  • 高周波放電スラスタのエネルギー収支に関する研究

    大宅将史,小川真司,山本直嗣,梶村好宏,中島秀紀

    総合理工学報告   2007.11

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  • 均一・高密度プラズマ生成アンテナを用いたマイクロ波放電型イオンスラスタの高性能化 Reviewed

    山本直嗣, 三好誠,増井博一,宮本尚使, 宗貞伸孝, 中島秀紀

    日本航空宇宙学会誌和文論文論文集,   2007.11

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  • Numerical Analysis for Effect of Magnetic Field Configuration on the Trust Performance in a Miniature Ion Engine Reviewed International journal

    T.Kanagawa, H.Masui, N.Yamamoto, H.Nakashima

    Proc. of the 6th International Symposium on Applied Plasma Science,   2007.9

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  • Energy Balance in a Radio Frequency Electrothermal Thruster with Water Propellant Reviewed International journal

    Masashi Oya, Naoji Yamamoto, Shinji Ogawa, Yoshihiro Kajimura, and Hideki Nakashima

    Proc. of the 6th International Symposium on Applied Plasma Science,   2007.9

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  • 高周波放電スラスタのエネルギーバランスに関する研究 Reviewed

    大宅将史,小川真司,山本直嗣,梶村好宏,中島秀紀

    プラズマ応用科学   2007.6

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  • ホールスラスタにおける放電振動の一次元数値解析, Reviewed

    上田善太郎,山本直嗣,小泉 宏之,荒川義博

    日本航空宇宙学会誌和文論文論文集,   55 ( 638 )   2007.3

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  • Development of Miniature Microwave Discharge Ion Thruster International journal

    N. Yamamoto, S. Kondo, T. Kanagawa, T. Chikaoka, K. Yoshihiro, H. Nakashima

    Proceedings of the VI-th International Workshop on Microwave Discharges: Fundamentals and Applications,   2006.12

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  • Magnetic Field Configuration Effects on Thrust Performance of Miniature Microwave Discharge Ion Engine Reviewed International journal

    Takayuki Chikaoka, Shinya Kondo, Naoji Yamamoto, Hideki Nakashima, Yoshiyuki Takao,

    Proc. of the 25th Int. Symposium on Space Technology and Science   2006.12

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  • Performance Test of Micro Ion Thruster using Microwave Discharge, Reviewed International journal

    Yoshiyuki Takao, Hiroshi Kataharada, Takashi Miyamoto, Hirokazu Masui, Naoji Yamamoto and Hideki Nakashima,

    Vacuum   80 ( 11月12日 )   2006.9

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  • Analysis of Electron and Microwave Behaviors in Microwave Discharge Neutralizer, Reviewed International journal

    H. Masui, Y. Tashiro, N. Yamamoto, H. Nakashima, I. Funaki

    Trans. Jpn. Society for Aeronautical and Space Sciences,   2006.8

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  • Development of Small Microwave Discharge Ion Thruster Reviewed International journal

    H. Kataharada, Y. Takao, N. Yamamoto, H. Ijiri, H. Nakashima

    Thin Solid Films   2006.3

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  • Erratum: Discharge current oscillation in hall thrusters (Journal of Propulsion and Power (2005) 21:5 (870-876)) Reviewed

    Naoji Yamamoto, Kimiya Komurasaki, Yoshihiro Arakawa

    Journal of Propulsion and Power   22 ( 2 )   478   2006.3

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    DOI: 10.2514/1.22410

  • ホールスラスタにおける放電振動の一次元数値解析 Reviewed

    上田善太郎,山本直嗣,荒川義博,

    プラズマ応用科学,   2005.12

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  • Suppression of Discharge Current Oscillations in a Hall Thruster Reviewed International journal

    Naoji YAMAMOTO, Shigeru YOKOTA, Keiko WATANABE, Akihiro SASOH, Kimiya KOMURASAKI, Yoshihiro ARAKAWA

    Transactions of The Japan Society for Aeronautical and Space Sciences   48 ( 161 )   169 - 174   2005.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2322/tjsass.48.169

    Repository Public URL: http://hdl.handle.net/2324/5841

  • MEASUREMENT OF EROSION RATE BY ABSORPTION SPECTROSCOPY IN A HALL THRUSTER Reviewed International journal

    Naoji Yamamoto, Shigeru Yokota, Makoto Matsui and Kimiya Komurasaki,Yoshihiro Arakawa

    Review of Scientific Instruments   76 ( 8 )   2005.8

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    DOI: 10.1063/1.2001630

    Repository Public URL: http://hdl.handle.net/2324/5840

  • Development of Small-Scale Ion Thruster Utilizing Microwave Discharge Plasma Reviewed International journal

    Y. Takao, T. Miyamoto, H. Kataharada, H. Nakashima, H. Masui, T. Kai, H. Ijiri, Y. Mori, N. Yamamoto,

    Proc. of the 24th Int. Symposium on Space Technology and Science,   2004.12

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  • Control of Discharge Current Oscillations in Hall Thrusters Reviewed International journal

    N. Yamamoto, K. Watanabe, A. Sasoh, K. Komurasaki, Y. Arakawa

    Proc. of the 24th Int. Symposium on Space Technology and Science,   2004.12

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  • Development of a Microwave Discharge Ion Engine by Using Monopole Antennas, Reviewed International journal

    T. Miyamoto, N. Yamamoto, H. Ijiri, Y. Takao, H. Nakashima

    Proc. of the 24th Int. Symposium on Space Technology and Science   2004.12

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  • ホール型イオン源プルーム中の酸素原子密度計測 Reviewed

    山本直嗣, 中川貴史, 松井信, 小紫公也, 荒川義博,

    プラズマ応用科学   2003.12

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  • 酸素を推進剤に用いたホールスラスタの研究 Reviewed

    中川貴史, 山本直嗣, 小紫公也, 荒川義博

    日本航空宇宙学会誌和文論文論文集   2003.11

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    Repository Public URL: http://hdl.handle.net/2324/16995

  • 作動ガスに酸素を用いたホール加速器のイオンビーム特性 Reviewed

    山本直嗣, 中川貴史, 松井信, 小紫公也, 荒川義博,

    プラズマ応用科学   2002.12

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  • Effect of Discharge Oscillations on Hall Thruster Performance Reviewed International journal

    Yamamoto N., Nakagawa T., Komurasaki K. and Arakawa Y.,

    Proceedings of the 23rd International Symposium on Space Technology and Science,   2002.10

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  • Discharge plasma fluctuations in hall thrusters Reviewed

    Naoji Yamamoto, Takafumi Nakagawa, Kimiya Komurasaki, Yoshihiro Arakawa

    Vacuum   65 ( 3-4 )   375 - 381   2002.5

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    DOI: 10.1016/S0042-207X(01)00445-6

  • ホール加速器における放電振動と推進性能の関係 Reviewed

    山本直嗣, 中川貴史,, 小紫公也, 荒川義博

    プラズマ応用科学   2001.12

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  • Observation of Plasma Fluctuations in Hall Accelerators Reviewed International journal

    Yamamoto N., Nakagawa T., Komurasaki K. and Arakawa Y.,

    Proceedings of the 3rd International Symposium on Applied Plasma Science, Advances in Applied Plasma Science   2001.7

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  • ホール型推進機の放電振動 Reviewed

    山本 直嗣,  中川 貴史, 小紫 公也, 荒川 義博,

    プラズマ応用科学   2000.12

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  • Discharge-current Oscillations in Hall Thrusters Reviewed International journal

    Yamamoto N., Momo, S, Komurasaki K. and Arakawa Y.,

    Proceedings of the 22nd International Symposium on Space Technology and Science   2000.10

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▼display all

Books

  • レクチャー電磁気学

    @山本直嗣( Role: Sole author)

    サイエンス社  2023.9 

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    Language:Japanese   Book type:General book, introductory book for general audience

  • 水素-将来のエネルギーを目指して-, 第9章宇宙ロケットに関わる水素,

    西川正史, 深田智, 渡辺幸信共編.( Role: Joint author)

    東京 : 養賢堂  2006.4 

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    Language:Japanese   Book type:Scholarly book

Presentations

  • Numerical Analysis for Effect of Magnetic Field Configuration on the Trust Performance in a Miniature Ion Engine International conference

    T.Kanagawa, H.Masui, N.Yamamoto, H.Nakashima

    6th Int. Symp. on Applied Plasma Science  2007.9 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • A Suppression method of Discharge Current Oscillations in a Hall Thruster International conference

    Naoji Yamamoto, Kimiya Komurasaki and Yoshihiro Arakawa,

    40th AIAA/ASME/SAE/ASEE Joint Propulsion conference &amp;amp; exhibit, 2004.  2004.7 

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    Presentation type:Oral presentation (general)  

    Country:United States  

  • 電気推進ロケットの現状と課題, Invited

    山本 直嗣

    プラズマ夏の学校2004年  2004.8 

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    Presentation type:Oral presentation (invited, special)  

    Venue:盛岡   Country:Japan  

  • Effect of Antenna Configuration on Thrust Performance in a Miniature Microwave Discharge Ion Engine, International conference

    Naoji Yamamoto, Hiroshi Kataharada, Takayuki Chikaoka, Hirokazu Masui, and Hideki Nakashima., Yoshiyuki Takao,

    29th International Electric Propulsion Conference,  2005.11 

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    Presentation type:Oral presentation (general)  

    Country:United States  

  • ホールスラスタの放電振動, Invited

    山本 直嗣,

    電気推進小研究会〜ホールスラスタについて〜  2006.3 

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    Presentation type:Oral presentation (invited, special)  

    Venue:東京   Country:Japan  

  • Energy Balance in a Radio Frequency Electrothermal Thruster with Water Propellant. International conference

    M. Oya, N. Yamamoto, S. Ogawa, Y. Kajimura and H. Nakashima

    6th Int. Symp. on Applied Plasma Science  2007.9 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • In space propulsionとしての大型ホールスラスタの検討

    本 直嗣, 宮坂 武志, トニー ショーンヘル, 横田 茂, 尾崎 敏之, 大須 賀 弘行, 田原 弘一, 小紫 公也, 小泉宏之, 船木 一幸

    平成23年度宇宙輸送シンポジウム  2039.1 

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    Event date: 2039.1

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:相模原   Country:Japan  

  • Thrust Performance in a 5 kW Class Anode Layer Type Hall Thruster International conference

    Naoji Yamamoto, Kohei Takase, Akira kakami, Yuya Hirano, Kimiya Komurasaki, Ryudo Tsukizaki, Satoshi Hosoda, Hitoshi Kuninaka, Shigeru Yokota

    34th IEPC/30th ISTS  2015.7 

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    Event date: 2015.7

    Language:English  

    Country:Japan  

    Other Link: http://www.ists.or.jp/2015/

  • Thrust Performance in Hall Thruster with Pulsating Operation International conference

    Naoji Yamamoto, Haruki Takegahara, Hiroki Watanabe, Kyoichi Kuriki, Taichiro Tamida, Hiroyuki Osuga

    34th IEPC/30th ISTS  2015.7 

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    Event date: 2015.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

    Other Link: http://www.ists.or.jp/2015/

  • 自己判断能力を備えた長寿命・高効率ホールスラタシテムの開発

    山本 直嗣, 高瀬紘平, 竹ヶ原春貴, 渡邊裕樹, 宮坂武志, 各務聡, 船木一幸

    平成26年度宇宙科学に関する室内実験シンポジウム  2015.2 

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    Event date: 2015.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川県相模原市   Country:Japan  

  • 5kW級アノードレイヤ型ホールスラスタの性能に関する研究

    山本 直嗣, 伊藤匠, 細田 聡史, 月崎 竜童

    平成26年度宇宙輸送シンポジウム  2015.1 

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    Event date: 2015.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川県相模原市   Country:Japan  

  • Plasma-materials interactions in spacecraft propulsion International conference

    Naoji Yamamoto

    Plasma conference 2014  2014.11 

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    Event date: 2014.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • Development of a miniature microwave discharge neutralizer for miniature ion engines International conference

    Naoji Yamamoto

    33rd International Electric Propulsion Conference  2013.10 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • Development of a novel power processing unit for Hall thrusters, , IEPC2013 International conference

    Naoji Yamamoto, H. Takegahara, H. Osuga, K. KUriki, T. tamida, J. Aoyagi

    33rd International Electric Propulsion Conference  2013.10 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • Developments of Robust Anode-layer Intelligent Thruster for Japan IN-space propulsion system International conference

    Naoji Yamamoto, et al.

    33rd International Electric Propulsion Conference  2013.10 

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    Event date: 2013.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • Erosion Sensor for Anode Layer Type Hall Thruster, International conference

    Naoji Yamamoto, kibe atsushi, Hideki Nakashima

    29th International Symposium on Space Technology and Science,  2013.6 

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    Event date: 2013.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  • キャビティリングダウン分光法を用いたイオンスラスタの寿命評価システムの開発

    山本 直嗣, 木邊 厚視, 中島 秀紀

    第53回航空原動機・宇宙推進講演会,  2013.3 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  • ホールスラタのパ同期駆動方式開発

    山本 直嗣, 民田 太一郎, 大須賀 弘行, 竹ヶ原 春貴, 栗木 恭一

    平成24年度宇宙輸送シンポジウム  2013.1 

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    Event date: 2013.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:神奈川県相模原市   Country:Japan  

  • 5kW級アノードレーヤー型ホールスラスタの設計とさらなる大型化への指針

    山本 直嗣, 横田茂, 小紫公也

    第56回宇宙科学技術連合講演会,  2012.11 

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    Event date: 2012.11

    Language:Japanese  

    Venue:大分県別府市   Country:Japan  

  • Dependence of lifetime on magnetic field configuration in a Hall thruster International conference

    Naoji Yamamoto, Hideki Nakashima, Azer P.Yalin

    48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit,  2012.7 

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    Event date: 2012.7 - 2012.8

    Language:English   Presentation type:Oral presentation (general)  

    Country:United States  

  • レーザー核融合ロケット推進の原理実証実験

    中島 秀紀, 藤岡 慎介, 山本 直嗣, 砂原 淳, 森 芳孝, 城崎 知至

    レーザー研シンポジウム2012  2012.4 

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    Event date: 2012.4

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:大阪   Country:Japan  

  • レーザー核融合ロケット推進の基礎実験

    中島 秀紀, 藤岡 慎介, 山本 直嗣, 砂原 淳, 森 芳孝, 城崎 知至

    レーザー研シンポジウム2012  2012.4 

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    Event date: 2012.4

    Language:Others  

    Venue:大阪   Country:Japan  

  • デブリ除去用小型衛星に搭載可能なイオンエンジンの開発,

    山本直嗣, 中島秀紀, 田中雅慶

    宙空環境研究センター共同利用研究成果発表  2012.3 

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    Event date: 2012.3

    Language:Others  

    Venue:福岡   Country:Japan  

  • Development of a Miniature Microwave Discharge Ion Engine International conference

    Naoji Yamamoto, Yoshiaki Hiraoka, Kensake Sugita, Kenji, Hirano, Hideki Nakashima

    AJCPP2012  2012.3 

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    Event date: 2012.3

    Language:Others  

    Country:China  

  • Development of a Miniature Microwave Discharge Ion Engine International conference

    Naoji Yamamoto, Yoshiaki Hiraoka, Kensake Sugita, Kenji, Hirano, Hideki Nakashima

    AJCPP2012  2012.3 

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    Event date: 2012.3

    Language:Others  

    Country:China  

  • In space propulsionとしての大型ホールスラスタ

    小紫公也, 宮坂 武志, 山本直嗣

    2012.2 

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    Event date: 2012.2

    Language:Others  

    Venue:相模原   Country:Japan  

  • 小型イオンエンジンに対するJIEIDIコードの適用と求解速度の向上

    中村祐輔, 中野正勝, 山本直嗣, 中島秀紀

    平成23年度宇宙輸送シンポジウム  2012.1 

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    Event date: 2012.1

    Language:Others  

    Venue:相模原   Country:Japan  

  • 小型イオンエンジンシステムの開発

    山本直嗣, 平岡義章, 杉田健策, 平野賢治, 中島秀紀

    第55回宇宙科学技術連合講演会  2011.11 

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    Event date: 2011.11 - 2011.12

    Language:Others  

    Venue:松山   Country:Japan  

  • 小型マイクロ波放電型イオンエンジンの推進性能向上に関する研究

    平岡義章, 杉田健策,山本直嗣,中島秀紀

    2010年度日本航空宇宙学会西部支部講演会  2010.11 

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    Event date: 2011.11 - 2010.11

    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • イオンスラスタ内部プラズマに関する研究

    山本直嗣, 杉田健策, 富田健太郎, 中島秀紀, 内野喜一郎

    第27回九州・山口プラズマ研究会  2011.11 

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    Event date: 2011.11

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:柳川   Country:Japan  

  • Feasibility Study on Hall Thruster with Inductively Coupled Plasma Cathode, International conference

    atoshi KASAGAMI, Takuji OKUMA, Naoji YAMAMOTO, Hiroki WATANABE, Takuya NAKABAYASHI, Taichiro TAMIDA, Hiroyuki OSUGA, Junichiro AOYAGI and Haruki TAKEGAHARA

    The 8th International Symposium on Applied Plasma Science  2011.9 

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    Event date: 2011.9

    Language:Others  

    Country:Japan  

  • Measurement of Plasma Property in an Ion Thruster using Laser Thomson Scattering Technique,International Electric Propulsion Conference, Wiesbaden • Germany September 11 – 15, 2011 International conference

    2011.9 

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    Event date: 2011.9

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:Wiesbaden   Country:Germany  

  • The Design and Control of Hall Thrusters Using the Dimension Scaling Law of the Operating Points International conference

    Taichiro Tamida, Hiroyuki Osuga, Naoji Yamamoto, Matsushi Miura

    32nd International Electric Propulsion Conference  2011.9 

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    Event date: 2011.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Germany  

  • A New Magnetic Flux Density Control Method to Improve Power Consumption of Hall Thruster, Invited International conference

    H. Osuga, F. Kurokawa, T. Tamida, N. Yamamoto

    32nd International Electric Propulsion Conference  2011.9 

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    Event date: 2011.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Germany  

  • イオンスラスタグリッド近傍の電子密度・温度計測

    山本直嗣, 栗田知明, 富田健太郎, 内野喜一郎, 中島秀紀

    第51回航空原動機・宇宙推進講演会  2011.3 

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    Event date: 2011.3

    Language:Others   Presentation type:Oral presentation (general)  

    Venue:広島   Country:Japan  

  • 小型マイクロ波放電型イオンスラスタのマイクロ波周波数依存性

    杉田健策, 栗田知明, 新谷將, 山本直嗣, 中島秀紀

    平成22年度宇宙輸送シンポジウム  2011.1 

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    Event date: 2011.1

    Language:Others  

    Venue:相模原   Country:Japan  

  • 小型イオンエンジンのグリッド設計

    山本直嗣, 杉田健策, 栗田知明, 中島秀紀

    平成22年度宇宙輸送シンポジウム  2011.1 

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    Event date: 2011.1

    Language:Others  

    Venue:相模原   Country:Japan  

  • マイクロ波放電型イオンエンジンのシミュレーションコードの開発

    山本直嗣, 下川床潤, 新谷將, 中島秀紀

    第54回宇宙科学技術連合講演会  2010.11 

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    Event date: 2010.11

    Language:Others  

    Venue:静岡   Country:Japan  

  • マイクロ波放電型イオンスラスタにおける推進性能のマイクロ波周波数依存性

    山本直嗣, 杉田健策, 中島秀紀

    第54回宇宙科学技術連合講演会  2010.11 

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    Event date: 2010.11

    Language:Others  

    Venue:静岡   Country:Japan  

  • A new conditioners control for optimal power efficiency of Hall thruster

    H. Osuga, F. Kurokawa, T. Tamida, N. Yamamoto

    Power Electronics and Motion Control Conference (EPE/PEMC), 2010 14th International,  2010.9 

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    Event date: 2010.9

    Language:Others   Presentation type:Oral presentation (general)  

    Country:Other  

  • レーザートムソン散乱法による小型イオンエンジン内プラズマの計測

    山崎尚人、真島周也、富田健太郎、内野喜一郎、鶴哲平、近藤慎哉、山本直嗣、中島秀紀

    応用物理学会九州支部シンポジウム 

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    Country:Japan  

  • トムソン散乱法を用いた小型マイクロ波イオンエンジン内プラズマの計測

    山崎尚人、真島周也、富田健太郎、内野喜一郎、鶴哲平、近藤慎哉、山本直嗣、中島秀紀

    プラズマ・核融合学会 第11回九州・沖縄・山口支部大会 

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    Country:Japan  

  • レーザートムソン散乱法による小型イオンエンジン内プラズマの計測

    真島周也、山崎尚人、富田健太郎、内野喜一郎、鶴哲平、近藤慎哉、山本直嗣、中島秀紀

    電気学会九州支部第60回連合大会 

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    Country:Japan  

  • Thomson Scattering Diagnostics of a Plasma Produced in a Miniature Microwave Discharge Ion Engine International conference

    K. Tomita, A. Majima, T. Yamada, K. Uchino, S. Kondo, N. Yamamoto, H. Nakashima

    18th Int. Symposium on Plasma Chemistry (ISPC18) 

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    Country:Japan  

  • 小型マイクロ波イオンエンジン内プラズマのレーザートムソン散乱法による計測

    富田 健太郎、真島 周也、 山田 貴夫、内野 喜一郎、近藤 慎哉、山本 直嗣、中島 秀紀

    2007年(平成19年)秋季 第68回応用物理学会学術講演会 

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    Country:Japan  

  • Development of Microwave Discharge Ion Engine by using Monopole International conference

    Takashi Miyamoto Naoji Yamamoto, Hidenobu Ijiri Yoshiyuki Takao and Hideki Nakashima.

    24th International Symposium on Space Technology and Science  2004.5 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

    Development of Microwave Discharge Ion Engine by using Monopole

  • Control of Discharge Current Oscillations in Hall Thrusters, International conference

    Naoji Yamamoto, Keiko Watanabe, Akihiro Sasoh, Kimiya Komurasaki, Yoshihiro Arakawa,

    24th Int. Symposium on Space Technology and Science  2004.5 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Development of Small-Scale Ion Thruster Utilizing Microwave Discharge Plasma International conference

    Y. Takao, T. Miyamoto, H. Kataharada, H. Nakashima, H. Masui, T. Kai, H. Ijiri, Y. Mori, N. Yamamoto

    The 24th Int. Symposium on Space Technology and Science,  2004.6 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Development of Small Microwave Discharge Ion Thruster International conference

    H. Kataharada, Y. Takao, N. Yamamoto, H. Ijiri and H. Nakashima

    7th Asia Pacific Conference on Plasma Science and Technology &amp;amp; 17th Symposium on Plasma Science for Materials,  2004.7 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • 小型マイクロ波放電型イオンエンジンの開発,

    山本直嗣,片原田弘,新屋敷佳祐,井尻秀信,鷹尾良行, 中島秀紀,

    日本航空宇宙学会西部支部講演会,  2004.10 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • マイクロ波放電型イオンエンジン中のプラズマの挙動解析

    増井博一,山本直嗣,中島秀紀, 船木一幸,

    日本航空宇宙学会西部支部講演会  2004.10 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • マイクロ波放電型イオンエンジンにおけるプラズマ生成領域に及ぼす磁場形状の影響

    新屋敷 佳祐,山本 直嗣,宮本 尚使,井尻 秀信,中島 秀紀

    日本航空宇宙学会西部支部講演会,  2004.10 

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    Presentation type:Symposium, workshop panel (public)  

    Venue:福岡,   Country:Japan  

  • アンテナを用いるマイクロ波放電型イオンエンジンの研究

    中島秀紀,山本直嗣,片原田弘,田代洋輔,新屋敷佳祐,増井博一,宮本尚使,井尻秀信

    第48回宇宙科学技術連合講演会,  2004.11 

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    Presentation type:Oral presentation (general)  

    Venue:福井   Country:Japan  

  • 水を用いた超小型ロケットエンジンの研究

    山本直嗣

    総理工セミナ2004  2004.11 

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    Venue:福岡   Country:Japan  

  • Thrust Performance of a 30 W Class Microwave Discharge Ion Engine, International conference

    Naoji Yamamoto, Hiroshi Kataharada, Hirokazu Masui, Hidenobu Ijiri, Yoshiyuki Takao and Hideki Nakashima,

    Asian Joint Conference on Propulsion and Power  2005.1 

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    Country:Japan  

  • マイクロ波放電型イオンエンジンにおける推進性能に及ぼすアンテナの影響

    山本直嗣, 新屋敷佳祐, 和泉敬介, 宮本尚使, 井尻秀信,中島秀紀

    平成16年度宇宙輸送シンポジウム  2005.1 

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    Venue:相模原   Country:Japan  

  • マイクロ波放電型イオンエンジンの開発

    井尻秀信,山本直嗣,,片原田弘,新屋敷佳祐,中島秀紀

    プラズマ科学シンポジウム2005/第22回プラズマプロセシング研究会  2005.1 

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    Presentation type:Oral presentation (general)  

    Venue:名古屋   Country:Japan  

  • マイクロ波放電型中和器におけるプラズマ及びマイクロ波挙動解析

    田代洋介, 増井博一, 山本直嗣, 中島秀紀, 船木一幸

    平成16年度宇宙輸送シンポジウム  2005.1 

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    Presentation type:Oral presentation (general)  

    Venue:相模原   Country:Japan  

  • 30 W級マイクロ波放電式イオンエンジンの研究開発

    片原田 弘, 山本 直嗣, 鷹尾 良行, 井尻 秀信, 中島 秀紀

    平成16年度宇宙輸送シンポジウム  2005.1 

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    Venue:相模原   Country:Japan  

  • Analysis of Plasma Behavior in Microwave Discharge Ion Engine International conference

    H. Masui, N. Yamamoto, H., Nakashima, I. Funaki

    Asian Joint Conference on Propulsion and Power  2005.1 

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    Country:Japan  

  • Influence of the Antenna Configuration on the Ionization Area in Microwave Discharge Ion Engine International conference

    K. Shinyashiki, N. Munesada, N. Yamamoto, T. Miyamoto, and H. Nakashima

    Asian Joint Conference on Propulsion and Power  2005.1 

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    Country:Japan  

  • A Miniaturized Ion Thruster and Neutralizer With Microwave Discharge International conference

    M. Tanisho, H. Kataharada, N. Yamamoto and H. Nakasima,

    56th International Astronautical Congress  2005.10 

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    Country:Japan  

  • Electromagnetic Field Analysis for Microwave Discharge Ion Engine using Multi mono-poles Antenna System International conference

    K. Izumi, H. Masui, K. Shinyashiki, N. Yamamoto and H. Nakashima

    56th International Astronautical Congress  2005.10 

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    Country:Japan  

  • Estimation of Erosion Rate by Absorption Spectroscopy in a Hall Thruster, International conference

    Naoji Yamamoto, Shigeru Yokota, Makoto Matsui, Kimiya Komurasaki, and Yoshihiro Arakawa,

    The 29th International Electric Propulsion Conference, Princeton University  2005.11 

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    Presentation type:Oral presentation (general)  

    Country:United States  

  • アンテナを用いるマイクロ波放電型イオンエンジンの研究 (2)

    中島 秀紀,山本 直嗣, 新屋敷 佳祐,和泉 敬介,増井 博一,宮本 尚史

    第49回宇宙科学技術連合講演会,  2005.11 

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    Presentation type:Oral presentation (general)  

    Venue:広島   Country:Japan  

  • マイクロ波放電式小型中和器に関する研究

    谷所正彦,近岡貴行,山本直嗣,中島秀紀

    平成17年度宇宙輸送シンポジウム  2006.1 

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    Venue:相模原   Country:Japan  

  • アンテナを用いたマイクロ波放電型イオンエンジンのビームプロファイル計測

    新屋敷佳祐, 宗貞伸孝, 三好誠, 山本直嗣, 中島秀紀

    平成17年度宇宙輸送シンポジウム  2006.1 

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    Venue:相模原   Country:Japan  

  • マイクロ波放電型小型中和器の開発

    山本 直嗣、谷所 正彦、近岡 貴行、近藤 慎哉、梶村 好宏、中島 秀紀

    第13回プラズマ応用科学会年会  2006.3 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • マイクロ波放電型小型中和器の開発

    近岡貴行,近藤慎哉,山本直嗣,中島秀紀

    第13回プラズマ応用科学会年会  2006.3 

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    Venue:福岡   Country:Japan  

  • Effect of Magnetic Field Configuration in Miniature Microwave Discharge Ion Engines, A International conference

    Naoji Yamamoto, Takayuki Chikaoka, Hirokazu Masui, and Hideki Nakashima,

    2006.4 

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    Country:China  

  • Effects of magnetic field and antenna configurations on thrust performance of microwave discharge ion engines with multi mono pole antenna system International conference

    N. Munesada, K. Shinyashiki, M. Miyoshi, T. Miyamoto, N. Yamamoto, Y. Kajimura, and H. Nakashima,

    The 25th Int. Symposium on Space Technology and Science  2006.6 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Magnetic Field Configuration Effects on Thrust Performance of Miniature Microwave Discharge Ion Engine International conference

    T. Chikaoka, S. Kondo, N. Yamamoto and H. Nakashima

    The 25th Int. Symposium on Space Technology and Science  2006.6 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Numerical Analysis of Microwave Discharge Plasma Source using Antennas for Space Propulsion International conference

    T. KASA, T.KANAGAWA, K. IZUMI, H. MASUI, N. YAMAMOTO, Y. KAJIMURA, H. NAKASHIMA,

    The 25th Int. Symposium on Space Technology and Science  2006.6 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Magnetic Field Design in Miniature Microwave Discharge Ion Engines, International conference

    Naoji Yamamoto, Takayuki Chikaoka, Shinya Kondo, Hirokazu Masui, Hideki Nakashima and Takao Yoshiyuki,

    42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference &amp;amp; Exhibit,  2006.7 

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    Presentation type:Oral presentation (general)  

    Country:United States  

  • Development of Miniature Microwave Discharge Ion Thruster, International conference

    N. Yamamoto, S. Kondo, T. Kanagawa, T. Chikaoka, Y. Kajimura, H. Nakashima,

    the VIth International Workshop on Microwave Discharges: Fundamentals and Applications,  2006.9 

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    Presentation type:Oral presentation (general)  

    Country:Russian Federation  

  • Numerical Simulation of Dependency of Ion Thruster Performance on Magnetic Field and Antenna Configurations International conference

    2006.11 

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    Country:Korea, Republic of  

  • 小型イオンスラスタの推進性能における磁場形状依存性

    近藤慎哉,近岡貴行,山本直嗣,梶村好宏,中島秀紀,

    第50 回宇宙科学技術連合講演会  2006.11 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • マイクロ波放電型イオンエンジンのアンテナ配置最適化

    三好誠, 新屋敷佳祐, 宗貞伸孝, 山本直嗣, 中島秀紀

    第50 回宇宙科学技術連合講演会  2006.11 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • 小型人工衛星用イオンスラスタの開発

    近岡貴行,近藤慎哉,金川隆保、山本直嗣,中島秀紀

    日本航空宇宙西部支部講演会2006  2006.11 

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    Venue:福岡   Country:Japan  

  • マイクロ波放電型イオンスラスタにおける電磁波エネルギ伝播の解析

    笠岳幸,金川隆保,増井博一,山本直嗣,梶村好宏,中島秀紀

    日本航空宇宙西部支部講演会2006  2006.11 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • マイクロ波放電型イオンスラスタにおけるアンテナと磁場形状が性能に及ぼす影響

    宗貞伸孝, 三好誠, 新屋敷佳祐, 宮本尚使, 山本直嗣, 梶村好宏,中島秀紀

    日本航空宇宙西部支部講演会2006  2006.11 

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    Presentation type:Oral presentation (general)  

    Venue:福岡   Country:Japan  

  • 小型マイクロ波放電型イオン源を用いた小型宇宙用エンジンの開発

    山本直嗣

    総理工セミナ2006  2006.11 

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    Presentation type:Oral presentation (general)  

    Venue:大阪   Country:Japan  

  • ホールスラスタのスラストベクトルコントロール,

    山本直嗣, 杉本幸子,中島秀紀, 荒川義博

    平成18年度宇宙輸送シンポジウム,  2007.1 

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    Venue:相模   Country:Japan  

  • マイクロ波放電式小型イオンエンジンの内部診断

    近藤慎哉,近岡貴行,金川隆保,山本直嗣,中島秀紀

    平成18年度宇宙輸送シンポジウム,  2007.1 

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    Presentation type:Symposium, workshop panel (public)  

    Venue:相模原   Country:Japan  

  • 木星探査を目指したイオンエンジンの開発

    三好誠, 宗貞伸孝, 笠岳幸, 山本直嗣, 梶村好宏, 中島秀紀

    平成18年度宇宙輸送シンポジウム,  2007.1 

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    Venue:相模原   Country:Japan  

  • ホールスラスタの内部診断

    山本直嗣、横田茂、中島秀紀、小紫公也、荒川義博

    第47回航空原動機・宇宙推進講演会  2007.3 

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    Presentation type:Oral presentation (general)  

    Venue:姫路   Country:Japan  

  • 小型矩形イオンスラスタの開発

    近藤慎哉,近岡貴行,山本直嗣,中島秀紀

    第47回航空原動機・宇宙推進講演会  2007.3 

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    Venue:姫路   Country:Japan  

  • アンテナを用いたマイクロ波放電型イオンエンジンの磁場依存性

    三好誠, 宗貞伸孝, 山本直嗣, 梶村好宏, 中島秀紀

    第47回航空原動機・宇宙推進講演会  2007.3 

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    Venue:姫路   Country:Japan  

  • Reserch on Miniature Microwave Discharge ion Engine International conference

    S. Kondo, T. Tsuru, N. Yamamoto, H. Nakashima

    9th Cross Straits Symposium  2007.5 

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    Country:Japan  

  • Thomson Scattering Diagnostics of a Plasma Produced in a Miniature International conference

    K. Tomita, A. Majima, T. Yamada, K. Uchino, S. Kondo, N. Yamamoto, H. Nakashima

    18th Int. Symposium on Plasma Chemistry  2007.8 

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    Country:Japan  

  • 小型マイクロ波イオンエンジン内プラズマのレーザートムソン散乱法による計測

    富田 健太郎,真島 周也, 山田 貴夫, 内野 喜一郎, 近藤 慎哉, 山本 直嗣, 中島 秀紀

    秋季 第68回応用物理学会学術講演会  2007.9 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • Microwave Discharge Ion Thruster using Argon as a Propellant International conference

    Makoto Miyoshi, Naoji Yamamoto, and Hideki Nakashima

    The 30th International Electric Propulsion Conference  2007.9 

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    Country:Italy  

  • Investigation of Internal Plasma Structure in an Anode-layer Hall Thruster International conference

    Nanako Takahashi, Naoji Yamamoto, Hideki Nakashima, Shigeru Yokota , Kimiya Komurasaki and Yoshihiro Arakawa

    The 30th International Electric Propulsion Conference  2007.9 

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    Country:Italy  

  • Boron Nitride Sputter Erosion Measurements by Cavity Ring-Down Spectroscopy International conference

    Azer P. Yalin, Lei Tao, Naoji Yamamoto, Timothy B. Smith, Alec D. Gallimore

    The 30th International Electric Propulsion Conference  2007.9 

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    Country:Italy  

  • Internal Plasma Structure Measurement in a Miniature Microwave Discharge Ion Thruster International conference

    S. Kondo, T. Chikaoka, T. Tsuru, N. Yamamoto, H. Nakashima, A Majima, T. Yamada, K. Tomita, K. Uchino

    The 30th International Electric Propulsion Conference  2007.9 

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    Country:Italy  

  • Numerical Simulation of Internal Plasma In A Miniature Microwave Discharge Ion Thruster International conference

    T. KANAGAWA, H.MASUI, N. YAMAMOTO, Y. KAJIMURA and H. NAKASHIMA

    The 30th International Electric Propulsion Conference  2007.9 

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    Country:Italy  

  • 木星探査用原子力電気推進ロケットの提案(4)

    中島秀紀, 永田英隆, 三好誠, 小谷優介, 山本直嗣, 梶村好宏

    日本原子力学会 秋の大会  2007.10 

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    Country:Japan  

  • 木星探査用原子力電気推進ロケットの提案(5)

    中島秀紀, 永田英隆, 三好誠, 小谷優介, 山本直嗣, 梶村好宏

    第51回宇宙科学技術連合講演会  2007.11 

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  • 小型長方形イオンスラスタの作動特性

    近藤慎哉、鶴哲平、山本直嗣、中島秀紀

    日本航空宇宙西部支部講演会2007  2007.11 

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    Presentation type:Oral presentation (general)  

    Country:Japan  

  • レーザー駆動原子力電気推進ロケットの検討

    中島秀紀, 川淵亮, 松田伸夫, 林田憲治, 梶村好宏, 山本直嗣

    プラズマ核融合学会 第24回年会,  2007.11 

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    Country:Japan  

  • レーザー駆動原子力電気推進ロケットの検討

    中島秀紀, 川淵亮, 松田伸夫, 林田憲治, 梶村好宏, 山本直嗣

    プラズマ核融合学会 第24回年会  2007.11 

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    Country:Japan  

  • 原子力電気推進システム搭載用小型原子炉の設計

    永田英隆、小谷優介、林田憲治、松田伸夫、梶村好宏、山本 直嗣、中島秀紀

    平成19年度宇宙輸送シンポジウム  2008.1 

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    Venue:相模原   Country:Japan  

  • レーザープラズマ駆動・原子力電気推進システムの提案

    中島秀紀、永田英隆、三好 誠、小谷優介、山本 直嗣、梶村好宏

    レーザー学会学術講演会第28回年次大会  2008.1 

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    Country:Japan  

  • マイクロ波放電式小型イオンスラスタの内部測定

    近藤慎哉、鶴哲平、山本直嗣、中島秀紀、真島周也、山崎尚人、富田健太郎、内野喜一郎

    平成19年度宇宙輸送シンポジウム  2008.1 

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    Venue:相模原   Country:Japan  

  • Sputtering Measurements by Cavity Ring-Down Spectroscopy and Application to Electric Propulsion and Plasma Engineering”, International conference

    2008.3 

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    Venue:St. Petersburg, FL   Country:United States  

  • Development of a Microwave Discharge Ion Thruster using Argon International conference

    Naoji Yamamoto, Makoto Miyoshi, Takao Yoshiyuki and Hideki Nakashima

    26th International Symposium on Space Technology and Science  2008.6 

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    Country:Japan  

  • Development of Real-time Boron Nitride Erosion Monitoring System for Hall Thrusters by Cavity Ring-Down Spectroscopy International conference

    Yamamoto, N., Yalin, A. P., Tao, L., Smith, T. B., Gallimore, A. D. and Arakawa, Y.

    26th International Symposium on Space Technology and Science  2008.6 

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    Country:Japan  

  • Neutralizer Development by Carbon Nanotube Cathode for Small Scale Ion Engine International conference

    Y. Takao, A. Kugimiya, S. Nagai, N. Yamamoto, H. Nakashima

    26th International Symposium on Space Technology and Science  2008.6 

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    Country:Japan  

  • Study of 2.5~10cm Size Microwave Discharge Ion Thruster International conference

    Y. Takao, A. Kugimiya, S. Nagai, N. Yamamoto, Y. Kajimura, H. Nakashima

    26th International Symposium on Space Technology and Science  2008.6 

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    Country:Japan  

  • High-Sensitivity Boron Nitride Sputter Erosion Measurements by Continuous-Wave Cavity Ring-Down Spectroscopy International conference

    Yalin, A. P., Tao, L., Oya, M., Yamamoto, N., Smith, T. B., and Gallimore, A. D.

    2008.7 

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    Country:United States  

  • Plasma Property Measurement in a Miniature Microwave Discharge Ion Thruster by Laser Thomson Scattering International conference

    2008.7 

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    Country:United States  

  • Numerical Analysis of the Plasma Behavior in a Miniature Microwave Discharge Ion Thruster International conference

    Y. Kajimura, T. Kanagawa, N. Yamamoto, H. Nakashima,

    26th International Symposium on Rarefied Gas Dynamics  2008.7 

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    Country:Japan  

  • レーザートムソン散乱法によるイオンエンジン内部のプラズマパラ メータの磁場依存性の調査

    山本 直嗣、鶴 哲平、小谷 優介、山崎 尚人、富田 健太郎、中島 秀紀、内野 喜一郎

    平成20年度宇宙輸送シンポジウム  2009.1 

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    Venue:相模原   Country:Japan  

  • Laser-Based Sensor for Real Time Sputter Monitoring and End Point Detection in Ion Beam Etch Systems International conference

    A.P. Yalin, L. Tao, N. Yamamoto

    2009 Society of Vacuum Coaters TechCon,  2009.1 

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    Country:United States  

  • CRDS法を用いたホールスラスタの寿命評価

    山本 直嗣, 大宅 将史, 中島 秀紀, Lei Tao, Azer Yalin, 荒川 義博

    第49回航空原動機・宇宙推進講演会  2009.3 

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    Venue:長崎   Country:Japan  

  • レーザープラズマ駆動・原子力電気推進システムの提案

    中島秀紀、山本直嗣

    レーザー研シンポジウム2009−平成20年度共同研究成果報告会−  2009.4 

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    Venue:吹田   Country:Japan  

  • Development of Real-time Erosion Monitoring System for Hall Thrusters by Cavity Ring-Down Spectroscopy International conference

    Naoji Yamamoto, Lei Tao , Binyamin Rubin , John D. Williams and Azer P.Yalin

    2009.7 

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  • Energy Balance in a Radio Frequency Electro-thermal Thruster International conference

    Masashi Oya, Naoji Yamamoto and Hideki Nakashima

    31st International Electric Propulsion Conference  2009.9 

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    Country:United States  

  • Cavity Ring-Down Spectroscopy Sensor for Real Time In Situ Measurement of Sputter Erosion in Anode Layer Type Hall Thrusters International conference

    Naoji Yamamoto, Lei Tao , Binyamin Rubin , John D. Williams and Azer P.Yalin

    31st International Electric Propulsion Conference  2009.9 

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  • Preliminary Experiments for Demonstrating Magnetic Thrust Chamber Concept in Laser Fusion Rocket International conference

    2009.10 

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    Venue:Ann Arbor   Country:United States  

  • Diagnostics of a plasma in a miniature microwave discharge ion thruster using Laser Thomson scattering technique International conference

    Naoji Yamamoto , Tomoaki Kurita , Kentaro Tomita , Kiichiro Uchino and Hideki Nakashima

    31th International Electric Propulsion Conference  2009.10 

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    Country:United States  

  • キャビティリングダウン分光法を用いたエッチングモニタリングセンサの開発

    山本直嗣

    平成21年度総理工セミナ—  2009.12 

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    Venue:茨木   Country:Japan  

  • 高周波放電スラスタの熱損失の解明

    大宅将史、山本直嗣、下川床潤、矢野貴洋、中島秀紀

    2009年度日本航空宇宙学会西部支部講演会  2009.12 

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    Venue:北九州   Country:Japan  

  • キャビティリングダウン分光法を用いたエッチングモニタリングセンサの開発

    山本直嗣

    平成21年度総理工セミナ—  2009.12 

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    Venue:茨木   Country:Japan  

  • 核融合ロケットへの適用を見込んだ磁気スラストチャンバーの実証実験

    山本直嗣、花屋倫生、前野旭弘、中島秀紀、藤岡慎介、砂原淳、城崎知至、森芳孝

    磁気ノズルスラスター情報交換会  2010.1 

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    Venue:相模原   Country:Japan  

  • ホールスラスタを作ってみる

    山本直嗣、江崎徹、中島秀紀澤井大輔、岡田誠

    平成21年度宇宙輸送シンポジウム  2010.1 

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    Venue:相模原   Country:Japan  

  • Development of a low power Hall thruster International conference

    Naoji Yamamoto, Toru Ezaki, Hideki Nakashima,

    2010 Asian Joint Conference on Propulsion and Power  2010.3 

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  • 2. レーザー核融合ロケットの実現可能性の検討 Invited

    山本直嗣, 中島秀紀

    レーザー研シンポジウム2010−平成21年度共同研究成果報告会−  2010.4 

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    Venue:吹田   Country:Japan  

▼display all

MISC

  • イオンエンジンのPWM制御時におけるOFF時のリーク電流低減に関する研究

    木下 順平, 白木 僚, 山本 直嗣, 大川 恭志, 船木 一幸, 中野 正勝

    プラズマ応用科学 = Applied plasma science : journal of IAPS   2021.6

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  • イオンエンジンにおける FEC を用いた中和システムの検討

    木下 順平, 江川 裕貴, 山本 直嗣, 中野 正勝, 大川 恭志, 船木 一幸, KINOSHITA Junpei, EGAWA Yuki, YAMAMOTO Naoji, NAKANO Masakatsu, OHKAWA Yasushi, FUNAKI Ikkoh

    令和元年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2019   2020.1

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    令和元年度宇宙輸送シンポジウム(2020年1月16日-17日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000147066レポート番号: STEP-2019-017

  • 電界放出型カソードを用いたイオンエンジンの中和特性

    山本 直嗣, 池田 凌, 竹末 一平, 森田 太智, 中野 正勝, 大川 恭志, 船木 一幸, Yamamoto Naoji, Ikeda Ryo, Takesue Ippei, Morita Taichi, Nakano Masakatsu, Ohkawa Yasushi, Funaki Ikkoh

    平成30年度宇宙科学に関する室内実験シンポジウム 講演集 = Proceedings of 2019 Symposium on Laboratory Experiment for Space Science   2019.2

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    平成30年度宇宙科学に関する室内実験シンポジウム (2019年2月28日-3月1日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)相模原キャンパス), 相模原市, 神奈川県資料番号: SA6000139038

  • レーザー核融合推進にむけた磁気ノズルによるプラズマ制御の数値解析(2017B2‐MORITA)

    森田太智, 長友英夫, 児島富彦, 山本直嗣, 枝本雅史, 砂原淳, 森芳孝, 城崎知至, 齋藤直哉, 板谷佑太朗, 梶村好宏, 藤岡慎介, 中島秀紀

    大阪大学レーザー科学研究所共同利用・共同研究成果報告書(CD-ROM)   2018.3

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  • 将来ミッションに向けた電気推進ロケットエンジンの現状と課題

    山本直嗣, 渡邊裕樹

    2018.2

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  • 200W級ホールスラスタの開発

    長野公勇, 森田太智, 山本直嗣, 窪田健一, 藤井剛, 杵淵紀世志

    プラズマ応用科学   2017.12

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    DOI: 10.34377/aps.25.2_85

  • 大電力電気推進が拓くオール電化衛星

    山本 直嗣, 田原 弘一, 小紫 公也, 船木 一幸

    2017.8

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    DOI: 10.14822/kjsass.65.8_236

  • イオンエンジンにおけるOn/Off制御の可能性検討

    川原 友太郎, 飯島 健介, 竹末 一平, 山本 直嗣, 森田 大智, 大川 恭志, 船木 一幸, 中野 正勝, Kawahara Yutaro, Iijima Kensuke, Takesue Ippei, Yamamoto Naoji, Morita Taichi, Ohkawa Yasushi, Funaki Ikkoh, Nakano Masakatsu

    平成28年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2016   2017.1

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    平成28年度宇宙輸送シンポジウム(2017年1月19日-20日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000086073レポート番号: STEP-2016-035

  • On-Off制御時のイオンビームの過渡シミュレーション

    中野 正勝, 山本 直嗣, 船木 一幸, 大川 恭志, Nakano Masakatsu, Yamamoto Naoji, Funaki Ikkoh, Ohkawa Yasushi

    平成28年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2016   2017.1

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    平成28年度宇宙輸送シンポジウム(2017年1月19日-20日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000086072レポート番号: STEP-2016-034

  • ホールスラスタにおけるニューラルネットワークを用いた推力の再構成

    淵上太貴, 森田太智, 山本直嗣

    プラズマ応用科学   2016.12

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  • 磁気スラストチャンバーによるプラズマ排出制御の実験的検証

    森田太智, 山本直嗣, 齋藤直哉, 枝本雅史, 三浦智之, 板谷佑太朗, 児島富彦, 砂原淳, 藤岡慎介, 長友英夫, 城崎知至, 森芳孝, 余語覚文, 西村博明, 中島秀紀

    日本物理学会講演概要集(CD-ROM)   2016.9

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  • 5kW級ホールスラスタRAIJINの共同開発

    小紫 公也, 山本 直嗣, 田原 弘一

    宇宙科学技術連合講演会講演集   2016.9

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  • 小型イオンエンジンを用いた新しい磁場計測の構築

    齋藤直哉, 枝本雅史, 三浦智之, 板谷佑太郎, 児島富彦, 森田太智, 山本直嗣, 藤岡慎介, 余語覚史, 西村博明, 砂原敦, 森芳孝, 城崎知至, 中島秀紀

    日本物理学会講演概要集(CD-ROM)   2016.9

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  • 磁気ノズルにおける推力発生の原理実証実験

    森田太智, 山本直嗣, 齋藤直哉, 川島諒祐, 枝本雅史, 三浦智之, 板谷佑太朗, 砂原淳, 藤岡慎介, 城崎知至, 森芳孝, 余語覚文, 西村博明, 中島秀紀

    日本物理学会講演概要集(CD-ROM)   2016.3

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  • CRDS 法を用いたグリッド損耗強度分布取得のための数値解析ツールの開発

    中野 正勝, 山本 直嗣, Nakano Masakatsu, Yamamoto Naoji

    平成27年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium FY2015   2016.1

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    平成27年度宇宙輸送シンポジウム(2016年1月14日-15日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県資料番号: SA6000050115レポート番号: STEP-2015-051

  • 大型レーザー生成プラズマを用いた磁気ノズルによる推進システムの模擬実験

    森田太智, 山本直嗣, 齋藤直哉, 藤岡慎介, 城崎知至, 川島諒祐, 森芳孝, 西村博明, 砂原淳, 余語覚文, 中島秀紀

    日本物理学会講演概要集(CD-ROM)   2015.9

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  • 弱連成を用いたマイクロ波放電式中和器の内部プラズマ電位についての数値解析

    楠田 将士, 中島 秀紀, 山本 直嗣

    宇宙科学技術連合講演会講演集   2014.11

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  • パルス重畳電源を用いたホールスラスタの性能調査及び回路モデルの構築

    伊藤 匠, 山本 直嗣, 中島 秀紀

    宇宙科学技術連合講演会講演集   2014.11

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  • 26pKB-5 レーザー駆動強磁場発生時における溶融石英の不透明化(核融合プラズマ(慣性核融合,高速点火),領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))

    石原 和大, 藤岡 慎介, Zhang Zhe, 西村 博明, 城崎 知至, 砂原 淳, 重森 啓介, 山本 直嗣, 白神 宏之, 近藤 康太郎, 疇地 宏

    日本物理学会講演概要集   2013.8

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  • JIEDIコードの高速化と遺伝アルゴリズムの適用

    中村 祐輔, 中野 正勝, 山本 直嗣, 中島 秀紀, Nakamura Yusuke, Nakano Masakatsu, Yamamoto Naoji, Nakashima Hideki

    平成24年度宇宙輸送シンポジウム: 講演集録 = Proceedings of Space Transportation Symposium: FY2012   2013.1

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    平成24年度宇宙輸送シンポジウム (2013年1月17日-1月18日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県形態: カラー図版あり形態: PDF資料番号: AA0061856134レポート番号: STEP-2012-051

  • 高強度レーザーを用いた強磁場発生とその応用

    石原 和大, 藤岡 慎介, ZHE Zhang, 重森 啓介, 弘中 陽一郎, 城崎 知至, 砂原 淳, 白神 宏之, 山本 直嗣, 中島 秀紀, 西村 博明, 疇地 宏

    レーザー学会研究会報告 = Reports on the Topical meeting of the Laser Society of Japan   2012.8

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  • Measurement of xenon plasma properties in an ion thruster using laser Thomson scattering technique

    N. Yamamoto, K. Tomita, K. Sugita, T. Kurita, H. Nakashima, K. Uchino

    Review of Scientific Instruments   2012.7

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    Measurement of xenon plasma properties in an ion thruster using laser Thomson scattering technique
    This paper reports on the development of a method for measuring xenon plasma properties using the laser Thomson scattering technique, for application to ion engine system design. The thresholds of photo-ionization of xenon plasma were investigated and the number density of metastable atoms, which are photo-ionized by a probe laser, was measured using laser absorption spectroscopy, for several conditions. The measured threshold energy of the probe laser using a plano-convex lens with a focal length of 200 mm was 150 mJ for a xenon mass flow rate of 20 μgs and incident microwave power of 6 W; the probe laser energy was therefore set as 80 mJ. Electron number density was found to be (6.2 ± 0.4) × 10 17 m -3 and electron temperature was found to be 2.2 ± 0.4 eV at a xenon mass flow rate of 20 μgs and incident microwave power of 6 W. The threshold of the probe laser intensity against photo-ionization in a miniature xenon ion thruster is almost constant for various mass flow rates, since the ratio of population of the metastable atoms to the electron number density is little changed. © 2012 American Institute of Physics.

    DOI: 10.1063/1.4737144

  • マイクロ波放電型イオンスラスタのシミュレーションコードの開発(<特集>電気推進・先端推進の数値シミュレーション)

    山本 直嗣, 増井 博一, 金川 隆保, 新谷 將, 中島 秀紀

    日本航空宇宙学会誌   2011.8

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    DOI: 10.14822/kjsass.59.691_238

  • 口径3cmおよび5cm級マイクロ波放電型イオンエンジンの開発

    鷹尾 良行, 中島 秀紀, 山本 直嗣

    プラズマ応用科学   2010.12

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  • 5.レーザー核融合プラズマ推進の研究(<小特集>大型レーザー装置を用いた科学研究の新展開)

    前野 旭弘, 山本 直嗣, 中島 秀紀

    プラズマ・核融合学会誌   2010.10

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    将来の火星などの太陽系惑星の有人宇宙探査のためには,従来にない高い比推力と大きな推力を併せ持つ宇宙推進システム(ロケット)を開発する必要がある.その候補の一つとして,莫大なエネルギーを生成するレーザー核融合と磁気スラストチャンバーを組み合わせたレーザー核融合ロケットが挙げられる.本章では,大阪大学レーザーエネルギー学研究センターの共同利用研究施設にて実施した磁気スラストチャンバーの原理実証実験について解説する.

  • Measurements of electron density and temperature in a miniature microwave discharge ion thruster using laser Thomson scattering technique

    N. Yamamoto, K. Tomita, N. Yamasaki, T. Tsuru, T. Ezaki, Y. Kotani, K. Uchino, H. Nakashima

    PLASMA SOURCES SCIENCE & TECHNOLOGY   2010.8

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    DOI: 10.1088/0963-0252/19/4/045009

  • 2-5cm級マイクロ波放電型イオンエンジンの開発

    鷹尾 良行, 山本 直嗣, 中島 秀紀

    電気学会研究会資料. PST, プラズマ研究会   2010.8

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  • Development of a cavity ring-down spectroscopy sensor for boron nitride sputter erosion in Hall thrusters

    Lei Tao, Naoji Yamamoto, Alec D Gallimore, Azer P Yalin

    2010.5

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    Development of a cavity ring-down spectroscopy sensor for boron nitride sputter erosion in Hall thrusters
    Sputter erosion of boron nitride (BN) is a critically important process in<br />
    Hall thrusters from the point of view of both lifetime assessment and<br />
    contamination effects. This contribution describes the development of a laser<br />
    based sensor for in situ monitoring of sputtered BN from Hall thrusters. We<br />
    present a continuous-wave cavity ring-down spectroscopy (cw-CRDS) system and<br />
    its demonstrative measurement results from BN sputtering experiments.

  • Thomson-Scattering Diagnostics of Plasmas Produced in a Miniature Microwave Discharge Ion Engine

    Tomita Kentaro, Yamamoto Naoji, Yamasaki Naoto, Tsuru Teppei, Uchino Kiichiro, Nakashima Hideki

    JOURNAL OF PROPULSION AND POWER   2010.3

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    DOI: 10.2514/1.39145

  • レーザートムソン散乱法による小型マイクロ波放電型イオンエンジンにおけるプラズマ状態の測定 (イオン加速グリッド耐久認定用数値解析 JIEDI(JAXA Ion Engine Development Initiatives) ツールの研究開発ワークショップ論文集)

    山本 直嗣, 富田 健太郎, 真島 周, 山崎 尚人, 近藤 慎也, 鶴 哲平, 中島 秀紀, 内野 喜一郎

    宇宙航空研究開発機構研究開発報告   2010.2

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    The plasma parameters, electron number density and electron energy distribution function, in a miniature microwave discharge ion thruster were successfully measured by means of laser Thomson scattering without perturbations. A photon counting method and a double monochromator were used against small Thomson scattering signal and strong stray laser light. The result shows an electron energy distribution function is Maxwellian, since the scattered spectrum can be fitted by Gaussian at the temperature of 1.5 eV. An electron density is 2.3×10^<18> m^<-3>. The measured electron number density an...

  • Sputter Erosion Sensor for Anode Layer-Type Hall Thrusters Using Cavity Ring-Down Spectroscopy

    Naoji Yamamoto, Lei Tao, Binyamin Rubin, John D. Williams, Azer P. Yalin

    JOURNAL OF PROPULSION AND POWER   2010.1

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    DOI: 10.2514/1.44784

  • Sputter Erosion Sensor for Anode Layer-Type Hall Thrusters Using Cavity Ring-Down Spectroscopy

    Naoji Yamamoto, Lei Tao, Binyamin Rubin, John D. Williams, Azer P. Yalin

    JOURNAL OF PROPULSION AND POWER   2010.1

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    DOI: 10.2514/1.44784

  • 小型マイクロ波放電型イオンスラスタにおける磁場強度が電子の平均エネルギーへ及ぼす影響

    新谷 將, 金川 隆保, 山本 直嗣

    プラズマ応用科学   2009.12

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  • Single-mode delivery of 250 nm light using a large mode area photonic crystal fiber

    N. Yamamoto, L. Tao, A. P. Yalin

    OPTICS EXPRESS   2009.9

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    DOI: 10.1364/OE.17.016933

  • Single-mode delivery of 250 nm light using a large mode area photonic crystal fiber

    N. Yamamoto, L. Tao, A. P. Yalin

    OPTICS EXPRESS   2009.9

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    DOI: 10.1364/OE.17.016933

  • Cavity ring-down spectroscopy sensor for ion beam etch monitoring and end-point detection of multilayer structures

    L. Tao, A. P. Yalin, N. Yamamoto

    REVIEW OF SCIENTIFIC INSTRUMENTS   2008.11

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    DOI: 10.1063/1.2995765

  • 小型イオンスラスタの推進性能における形状依存性

    山本 直嗣, 近藤 慎哉, 近岡 貴行, 金川 隆保, 中島 秀紀

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences   2008.8

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    The effects of antenna shape and magnetic field configuration on thrust performance in a 30W class miniature microwave discharge ion thruster were investigated with the objective of improving its thrust performance. The ion beam currents were measured for three different antenna configurations: disc, star, and cross. The results showed that the optimum antenna shape depends on the desired mass flow level because of the tradeoff between microwave-plasma coupling efficiency and surface area recombination. The ion beam current with various magnitude of magnetic field was measured, since magnet...

    DOI: 10.2322/jjsass.56.383

  • Effects of magnetic field configuration on thrust performance in a miniature microwave discharge ion thruster

    Naoji Yamamoto, Shinya Kondo, Takayuki Chikaoka, Hideki Nakashima, Hirokazu Masui

    JOURNAL OF APPLIED PHYSICS   2007.12

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    DOI: 10.1063/1.2822456

  • 高周波放電スラスタのエネルギー収支に関する研究

    大宅 将史, 小川 真司, 山本 直嗣

    九州大学大学院総合理工学報告   2007.11

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    An energy balance in inductively coupled radio frequency electrothermal thruster using water as a propellant was investigated with the objective of improving the thrust performance. Absorption efficiency was estimated by means of an I-V sensor, enthalpy transfer efficiency was estimated by means of a spectrometer and thrust efficiency was estimated by means of a thrust stand. The absorption efficiency using water is 0.75, which is worse than that using argon. This is because the number density using water is less than that of argon due to the low ionization coefficient. The enthalpy transfe...

    DOI: 10.15017/14573

  • 均一・高密度プラズマ生成アンテナを用いたマイクロ波放電型イオンスラスタの高性能化

    山本 直嗣, 三好 誠, 増井 博一, 宮本 尚使, 宗貞 伸孝, 中島 秀紀

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences   2007.11

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    The dependency of thrust performance on thruster configurations such as antenna length, antenna height, number of antenna, magnetic field configuration, and microwave frequency, was investigated with the objective of improving the thrust performance of microwave discharge ion thruster using antennas for uniform and dense plasma production. The experimental results showed that there was an optimum length of the antennas, and it was 3/4 times the wave length of incident microwaves. The ion beam current reaches its maximum value when the antenna was set at 2mm downstream of an electron cyclotron resonance layer. There was an optimum number of the antennas. This is due to the tradeoff between the coupling of plasma with microwave and the surface recombination on the antenna. The expansion of ionization zone was made successfully by changing magnetic field configuration. In addition, the thrust performance was slightly improved with increase in incident microwave frequency from 2.45GHz to 4.2GHz. A value for the ion beam current with 2.45GHz is compensated by high electron number density and less magnetized ions for the disadvantage of small plasma number density. Overall, the propellant utilization efficiency, ion production cost, and estimated thrust were found to be 0.62, 300W/A and 6.2mN, respectively at mass flow rate of 0.22mg/s for xenon, ion beam voltage of 1,500V and 2.45GHz microwave incident power at 32W.

    DOI: 10.2322/jjsass.55.546

  • 均一・高密度プラズマ生成アンテナを用いたマイクロ波放電型イオンスラスタの高性能化

    山本 直嗣, 三好 誠, 増井 博一, 宮本 尚使, 宗貞 伸孝, 中島 秀紀

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences   2007.11

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    The dependency of thrust performance on thruster configurations such as antenna length, antenna height, number of antenna, magnetic field configuration, and microwave frequency, was investigated with the objective of improving the thrust performance of microwave discharge ion thruster using antennas for uniform and dense plasma production. The experimental results showed that there was an optimum length of the antennas, and it was 3/4 times the wave length of incident microwaves. The ion beam current reaches its maximum value when the antenna was set at 2mm downstream of an electron cyclotron resonance layer. There was an optimum number of the antennas. This is due to the tradeoff between the coupling of plasma with microwave and the surface recombination on the antenna. The expansion of ionization zone was made successfully by changing magnetic field configuration. In addition, the thrust performance was slightly improved with increase in incident microwave frequency from 2.45GHz to 4.2GHz. A value for the ion beam current with 2.45GHz is compensated by high electron number density and less magnetized ions for the disadvantage of small plasma number density. Overall, the propellant utilization efficiency, ion production cost, and estimated thrust were found to be 0.62, 300W/A and 6.2mN, respectively at mass flow rate of 0.22mg/s for xenon, ion beam voltage of 1,500V and 2.45GHz microwave incident power at 32W.

    DOI: 10.2322/jjsass.55.546

  • 高周波放電スラスタのエネルギーバランスに関する研究

    大宅 将史, 小川 真司, 山本 直嗣

    プラズマ応用科学   2007.6

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  • Performance test of micro ion thruster using microwave discharge

    Yoshiyuki Takao, Hiroshi Kataharada, Takashi Miyamoto, Hirokazu Masui, Naoji Yamamoto, Hideki Nakashima

    VACUUM   2006.9

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    DOI: 10.1016/j.vacuum.2006.01.071

  • Analysis of electron and microwave behavior in microwave discharge neutralizer

    Hirokazu Masui, Yousuke Tashiro, Naoji Yamamoto, Hideki Nakashima, Ikkoh Funaki

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   2006.8

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    DOI: 10.2322/tjsass.49.87

  • Antenna configuration effects on thrust performance of miniature microwave discharge ion engine

    Naoji Yamamoto, Hirokazu Masui, Hiroshi Kataharada, Hideki Nakashima, Yoshiyuki Takao

    JOURNAL OF PROPULSION AND POWER   2006.7

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    DOI: 10.2514/1.18833

  • Development of small microwave discharge ion thruster

    H Kataharada, Y Takao, N Yamamoto, H Ijiri, H Nakashima

    THIN SOLID FILMS   2006.5

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    DOI: 10.1016/j.tsf.2005.08.045

  • Discharge current oscillation in Hall thrusters (vol 21, pg 870, 2005)

    N Yamamoto, K Komurasaki, Y Arakawa

    JOURNAL OF PROPULSION AND POWER   2006.3

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  • ホールスラスタにおける放電振動の一次元数値解析

    上田 善太郎, 荒川 義博, 山本 直嗣

    プラズマ応用科学   2005.12

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  • Suppression of discharge current oscillations in a Hall thruster

    N Yamamoto, S Yokota, K Watanabe, A Sasoh, K Komurasaki, Y Arakawa

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES   2005.11

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    DOI: 10.2322/tjsass.48.169

  • 30W級小型マイクロ波放電型イオンエンジンの性能評価

    鷹尾 良行, 片原田 弘, 山本 直嗣, 中島 秀紀

    電気学会研究会資料. PST, プラズマ研究会   2005.10

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  • Discharge current oscillation in Hall thrusters

    N Yamamoto, K Komurasaki, Y Arakawa

    JOURNAL OF PROPULSION AND POWER   2005.9

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    DOI: 10.2514/1.12759

  • Measurement of erosion rate by absorption spectroscopy in a Hall thruster

    N Yamamoto, S Yokota, M Matsui, K Komurasaki, Y Arakawa

    REVIEW OF SCIENTIFIC INSTRUMENTS   2005.8

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    DOI: 10.1063/1.2001630

  • ホール型イオン源プルーム中の酸素原子密度計測

    山本 直嗣, 中川 貴史, 松井 信

    プラズマ応用科学   2003.12

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  • 酸素を推進剤に用いたホールスラスタの研究

    中川 貴史, 山本 直嗣, 小紫 公也, 荒川 義博

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences   2003.11

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    Thrust performance and internal efficiencies of a Hall thruster using oxygen as the propellant were investigated experimentally. The thrust efficiency reached at 9&#37; with the specific impulse of 1,000s. The relatively poor performance is due to low propellant utilization, which is 45&#37;, in comparison with that in the case of xenon propellant. The propellant utilization increased with mass flow rate and discharge voltage. The optimum channel length for oxygen was found longer than that for xenon, which was 12mm. The use of BN・AlN for the channel wall results in higher propellant utilization th...

    DOI: 10.2322/jjsass.51.606

  • アノードレイヤ型ホールスラスタの作動特性

    山本 直嗣, 中川 貴史, 小紫 公也, 荒川 義博

    日本航空宇宙学会論文集 = Journal of the Japan Society for Aeronautical and Space Sciences   2003.9

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    Thrust performance and stable operation conditions of an anode layer type Hall thruster was investigated using a 1.5kW class anode layer type Hall thruster. The thrust efficiency reached at 53&#37; with the specific impulse of 2,000s, which are competitive with these of SPT-100 thrusters. Anode shape and axial position of the anode were changed. Stability of the discharge was found sensitive to the anode configuration and applied magnetic flux density.

    DOI: 10.2322/jjsass.51.492

  • 作動ガスに酸素を用いたホール加速器のイオンビーム特性

    山本 直嗣, 中川 貴史, 小紫 公也

    プラズマ応用科学   2002.12

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  • Discharge plasma fluctuations in hall thrusters

    N Yamamoto, T Nakagawa, K Komurasaki, Y Arakawa

    VACUUM   2002.5

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    DOI: 10.1016/S0042-207X(01)00445-6

  • ホール加速器における放電振動と推進性能の関係

    山本 直嗣, 中川 貴史, 小紫 公也

    プラズマ応用科学   2001.12

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  • ホール型推進機の放電振動

    山本 直嗣, 小紫 公也, 荒川 義博

    プラズマ応用科学   2000.12

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Industrial property rights

Patent   Number of applications: 1   Number of registrations: 1
Utility model   Number of applications: 0   Number of registrations: 0
Design   Number of applications: 0   Number of registrations: 0
Trademark   Number of applications: 0   Number of registrations: 0

Professional Memberships

  • 日本航空宇宙学会

  • American Institute of Aeronautics and Astronautics

  • Institute of Applied Plasma Science

  • THe Japan Society of Applied Physics

  • Japan Society of Aeronautical and Space Sciences

  • アメリカ航空宇宙学会

  • プラズマ応用科学会

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Committee Memberships

  • Steering committee member   Domestic

    2020.4 - 2022.3   

  • 日本航空宇宙学会   西部支部 委員   Domestic

    2020.4 - 2022.3   

  • Steering committee member   Domestic

    2018.3 - 2021.3   

  • 日本航空宇宙学会   日本航空宇宙学会 電気推進・先端推進部門 委員   Domestic

    2018.3 - 2021.3   

  • Steering committee member   Domestic

    2012.4 - 2013.3   

  • 運営委員   レーザー宇宙航空応用検討委員会 委員   Domestic

    2012.4 - 2013.3   

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Academic Activities

  • Screening of academic papers

    Role(s): Peer review

    2019

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:6

    Number of peer-reviewed articles in Japanese journals:2

    Proceedings of International Conference Number of peer-reviewed papers:2

  • Screening of academic papers

    Role(s): Peer review

    2018

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:6

    Number of peer-reviewed articles in Japanese journals:4

  • Screening of academic papers

    Role(s): Peer review

    2017

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:5

    Number of peer-reviewed articles in Japanese journals:2

  • 出版委員会 International contribution

    2016.7

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    Type:Competition, symposium, etc. 

    Number of participants:400

  • 出版委員会 International contribution

    2016.7

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    Type:Competition, symposium, etc. 

    Number of participants:1,000

  • 座長(Chairmanship) International contribution

    2016.3

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  • Screening of academic papers

    Role(s): Peer review

    2016

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    Type:Peer review 

    Number of peer-reviewed articles in foreign language journals:6

    Number of peer-reviewed articles in Japanese journals:6

  • 司会(Moderator) International contribution

    2015.7

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    Type:Competition, symposium, etc. 

  • 司会(Moderator)

    平成26年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2015.1

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    Type:Competition, symposium, etc. 

  • 司会(Moderator)

    平成25年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2014.1

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    Type:Competition, symposium, etc. 

  • セッションB プログラム委員 International contribution

    2013.6

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    Type:Competition, symposium, etc. 

    Number of participants:1,000

  • 司会(Moderator)

    第53回航空原動機・宇宙推進講演会  ( 倉敷市,岡山県 ) 2013.3

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  • 司会(Moderator)

    平成24年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2013.1

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  • 司会(Moderator)

    第56回宇宙科学技術連合講演会  ( 別府,大分 ) 2012.11

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    Type:Competition, symposium, etc. 

  • 司会(Moderator)

    第55回宇宙科学技術連合講演会  ( 松山,愛媛県 ) 2011.11 - 2011.12

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  • 司会(Moderator) International contribution

    2011.6

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  • 司会(Moderator)

    第51回航空原動機・宇宙推進講演会  ( 広島県 広島市 ) 2011.3 - Present

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    Type:Competition, symposium, etc. 

  • 司会(Moderator)

    平成22年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2011.1 - Present

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  • セッションB プログラム委員 International contribution

    2010.5 - 2011.6

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    Type:Competition, symposium, etc. 

    Number of participants:823

  • 司会(Moderator)

    日本航空宇宙学会 西部支部講演会2009  ( 福岡県北九州市 ) 2009.12

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  • 司会(Moderator) International contribution

    2009.9

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  • 司会(Moderator) International contribution

    2009.6

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    Type:Competition, symposium, etc. 

  • セッションB 委員 International contribution

    2009.5 - Present

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    Type:Competition, symposium, etc. 

    Number of participants:823

  • 司会(Moderator)

    第49回航空原動機・宇宙推進講演会  ( 長崎市、長崎県 ) 2009.3 - Present

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  • 司会(Moderator)

    平成20年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2009.1 - Present

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  • 司会(Moderator) International contribution

    2008.6

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    Type:Competition, symposium, etc. 

  • 司会(Moderator) International contribution

    2007.9 - Present

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  • 司会(Moderator)

    第47回航空原動機・宇宙推進講演会  ( 姫路市、兵庫県 ) 2007.3 - Present

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  • 司会(Moderator)

    平成18年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2007.1 - Present

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  • 司会(Moderator)

    平成17年度宇宙輸送シンポジウム  ( 相模原市、神奈川県 ) 2006.1 - Present

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  • 出版物部会 実行委員 International contribution

    第56回国際宇宙会議福岡大会  ( 福岡 ) 2005.10 - Present

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    Type:Competition, symposium, etc. 

    Number of participants:1,600

  • 座長(Chairmanship) International contribution

    2004.6 - Present

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Research Projects

  • ホールスラスタにおけるプラズマ乱流の理解と制御

    Grant number:22H00243  2022 - 2024

    日本学術振興会  科学研究費助成事業  基盤研究(A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 電気推進機における昇華性推進剤の検討

    2021.6 - 2022.2

    共同研究

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • レーザー核融合ロケットに関する研究

    2021.4 - 2022.3

    共同研究

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 電気推進機プラズマの観測技術の研究

    2021.2 - 2021.6

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • レーザー核融合ロケットにおけるデタッチメント現象の解明

    Grant number:21K18176  2021 - 2024

    日本学術振興会  科学研究費助成事業  挑戦的研究(開拓)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • イオン源における多価イオンプラズマ数値解析に関する研究

    2020.6 - 2021.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 電気推進機における昇華性推進剤の検討

    2020.6 - 2021.2

    共同研究

      More details

    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • レーザー核融合ロケットに関する研究

    2020.4 - 2021.3

    共同研究

      More details

    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 小型人工衛星において精密制御を可能にするワイドスロットリングレンジ イオンエンジンの開発

    2020

    第Ⅳ期 大学発ベンチャー事業シーズ育成支援プログラム

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • understanding electron transport in Hall thrusters International coauthorship

    2019.10 - 2025.3

      More details

    Authorship:Principal investigator 

  • 電気推進機における昇華性推進剤の検討

    2019.6 - 2020.2

    共同研究

      More details

    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • レーザー核融合ロケットに関する研究

    2019.4 - 2020.3

    共同研究

      More details

    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 電気推進機における昇華性推進剤の検討

    2019

    宇宙工学委員会戦略的研究費

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    Authorship:Principal investigator  Grant type:Contract research

  • ドラッグフリー衛星への搭載を目指した超小型イオンエンジンの開発

    2018.6 - 2019.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ホールスラスタにおける異常輸送現象の抑制

    Grant number:18KK0406  2018 - 2021

    日本学術振興会  科学研究費助成事業  国際共同研究強化(A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • ホールスラスタにおける異常輸送現象の解明

    Grant number:18H03815  2018 - 2021

    日本学術振興会  科学研究費助成事業  基盤研究(A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 低電力ホールスラスタシステムの研究

    2017.9 - 2018.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ドラッグフリー衛星への搭載を目指した超小型イオンエンジンの開発

    2017.6 - 2018.3

    共同研究

      More details

    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 低電力ホールスラスタシステムの研究

    2016.12 - 2017.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ドラッグフリー衛星への搭載を目指した超小型イオンエンジンの開発

    2016.6 - 2017.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ドラッグフリー衛星への搭載を目指した超小型イオンエンジンの開発

    2016 - 2018

    宇宙工学委員会戦略的研究費

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    Authorship:Principal investigator  Grant type:Contract research

  • レーザーレイリー散乱法を用いた中性粒子密度計測法の確立

    Grant number:16K14506  2016 - 2017

    科学研究費助成事業  挑戦的萌芽研究

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 電気推進の電源制御に関する研究

    2015.7 - 2016.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 電気推進の電源制御に関する研究

    2015.2 - 2016.6

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 電気推進の電源制御に関する研究

    2014.7 - 2015.2

    共同研究

      More details

    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 立方晶窒化ホウ素を材料に用いた電界放出型カソードの開発

    2014.6 - 2015.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • ホールスラスタの放電振動と協調可能な電源の開発

    Grant number:26289324  2014 - 2016

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 立方晶窒化ホウ素を材料に用いた電界放出型電子源の性能評価

    Grant number:26630444  2014 - 2015

    科学研究費助成事業  挑戦的萌芽研究

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 自己判断能力を備えた長寿命・高効率ホールスラスタシステム の開発

    2014

    平成26年度スペースプラズマ共同利用

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    Grant type:Contract research

  • ピコ秒レーザーを用いた高エネルギー粒子線源の開発

    2014

    平成26年度九州大学宙空環境研究センター「一般共同研究」

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • 電気推進の電源制御の研究

    2013.9 - 2014.8

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 立方晶窒化ホウ素を材料に用いた電界放出型カソードの開発

    2013.6 - 2014.3

    共同研究

      More details

    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 大型ホールスラスタの研究

    2013.1 - 2014.4

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 立方晶窒化ホウ素を材料に用いた電界放出型カソードの開発

    2013 - 2014

    宇宙工学委員会戦略的研究費

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    Authorship:Principal investigator  Grant type:Contract research

  • ホールスラスタの性能評価手法の開

    2012.9 - 2013.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 電気推進装置(ホールスラスタ及び電源)の電気的制御の研究

    2012.7 - 2013.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • PIC 法+FDTD 法のカップリングコードによるイオンエンジン中和器プラズマの解析

    2012.6 - 2013.3

    共同研究

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • In space propulsion

    2012.5 - 2017.3

    JAXA(Japan) 

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    Authorship:Principal investigator 

  • laser diagnostics for electric propulsion International coauthorship

    2012.5 - 2014.5

    Kyushu University(Japan) 

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    Authorship:Principal investigator 

  • ホールスラスタの耐久性向上に関する研究

    Grant number:23686123  2011 - 2014

    科学研究費助成事業  若手研究(A)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • キャビティリングダウン分光法を用いたイオンエンジンの寿命評価システムの開発

    Grant number:23656540  2011 - 2012

    科学研究費助成事業  挑戦的萌芽研究

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • レーザートムソン散乱法を用いたマイクロ波生成プラズマの挙動解析

    2010

    平成21年度 九州大学教育研究プログラム・研究拠点形成プロジェクト D-1

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • デブリ除去用小型衛星に搭載可能なイオンエンジンの開発

    2010

    平成21年度九州大学宙空環境研究センター「一般共同研究」

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • イオンエンジングリッド解析ツール検証のためのイオンエンジン実験研究

    2009.7 - 2010.2

    共同研究

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    Authorship:Coinvestigator(s)  Grant type:Other funds from industry-academia collaboration

  • 電源制御技術の研究

    2009.2 - 2010.3

    共同研究

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • レーザー核融合ロケット推進の原理実証実験

    Grant number:21360418  2009 - 2011

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • デブリ除去用小型衛星に搭載可能なイオンエンジンの開発

    2009

    平成21年度九州大学宙空環境研究センター「一般共同研究」

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

  • Laser Diagnostics of the Hall Thruster

    2008.6 - 2010.5

    Joint research

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    Authorship:Principal investigator  Grant type:Other funds from industry-academia collaboration

  • 実績に基づく新科学領域への展開

    2008

    研究拠点形成補助金、大学教育の国際化推進プログラム(海外先進研究実践支援)

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    Authorship:Principal investigator  Grant type:Contract research

  • Internal Plasma Structure Measurements in a Miniature Microwave Discharge Ion Thruster

    2007

    Japan Society for the Promotion of Science  International Academic Society Dispatch Program

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    Authorship:Principal investigator  Grant type:Joint research

  • 実績に基づく新科学領域への展開

    2007

    研究拠点形成補助金、大学教育の国際化推進プログラム(海外先進研究実践支援)

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    Authorship:Principal investigator  Grant type:Contract research

  • モジュール化が可能な小型マイクロ波放電型イオンエンジンの開発

    Grant number:17760638  2005 - 2006

    科学研究費助成事業  若手研究(B)

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    Authorship:Principal investigator  Grant type:Scientific research funding

  • 小型マイクロ波放電型イオンエンジンにおけるアンテナ形状が推進性能に及ぼす影響

    2005

    日本学術振興会  国際学会等派遣事業

      More details

    Authorship:Principal investigator  Grant type:Joint research

  • ホール型推進機における放電振動の抑制と高密度プラズマイオンの抽出

    Grant number:16106012  2004 - 2008

    日本学術振興会  科学研究費助成事業  基盤研究(S)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 均一・高密度プラズマ生成アンテナを用いたマイクロ波放電型イオンエンジンの高性能化

    Grant number:16560691  2004 - 2006

    日本学術振興会  科学研究費助成事業  基盤研究(C)

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    Authorship:Coinvestigator(s)  Grant type:Scientific research funding

  • 国際研究集会(海外)参加費用援助

    2004

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    Grant type:Donation

  • 水を用いた超小型ロケットエンジンの研究

    2004

    総合理工学府奨励研究

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    Authorship:Principal investigator  Grant type:On-campus funds, funds, etc.

▼display all

Educational Activities

  • 「Advanced Space Propulsion Engineering」
    「Energy Conversion Measurement Engineering」

Class subject

  • 航空力学

    2023.12 - 2024.2   Winter quarter

  • 電磁気学Ⅰ

    2023.10 - 2024.3   Second semester

  • 電磁気学E

    2023.10 - 2024.3   Second semester

  • 材料力学Ⅱ(S2-21)

    2023.6 - 2023.8   Summer quarter

  • 総合理工学修士実験

    2023.4 - 2024.3   Full year

  • 基礎材料力学Ⅰ

    2023.4 - 2024.3   Full year

  • 基礎材料力学Ⅱ

    2023.4 - 2024.3   Full year

  • プラズマ・量子理工学特別講義第二

    2023.4 - 2024.3   Full year

  • 総合理工学修士演習

    2023.4 - 2024.3   Full year

  • 総合理工学修士演習

    2023.4 - 2024.3   Full year

  • 物理概論

    2023.4 - 2023.9   First semester

  • 電磁気学Ⅱ

    2023.4 - 2023.9   First semester

  • プラズマ・量子理工学実践演習

    2023.4 - 2023.9   First semester

  • 物理学の進展A

    2023.4 - 2023.6   Spring quarter

  • 基礎材料力学Ⅱ

    2022.6 - 2022.8   Summer quarter

  • 材料力学Ⅱ(S2-21)

    2022.6 - 2022.8   Summer quarter

  • 総合理工学修士演習

    2022.4 - 2023.3   Full year

  • 総合理工学修士実験

    2022.4 - 2023.3   Full year

  • 物理概論

    2022.4 - 2022.9   First semester

  • 基礎材料力学Ⅰ【基礎材料力学】

    2022.4 - 2022.9   First semester

  • プラズマ・量子理工学実践演習

    2022.4 - 2022.9   First semester

  • 物理学の進展A

    2022.4 - 2022.6   Spring quarter

  • 基礎材料力学Ⅰ

    2022.4 - 2022.6   Spring quarter

  • 熱力学基礎

    2021.12 - 2022.2   Winter quarter

  • 先進宇宙ロケット工学演習

    2021.10 - 2022.3   Second semester

  • 電磁気学基礎

    2021.10 - 2021.12   Fall quarter

  • 基礎材料力学Ⅱ

    2021.6 - 2021.8   Summer quarter

  • 九大で学ぶ宇宙科学と技術B

    2021.6 - 2021.8   Summer quarter

  • 先端エネルギー変換工学特別講究

    2021.4 - 2022.3   Full year

  • エネルギー科学とマネージメントⅢ

    2021.4 - 2022.3   Full year

  • 先進宇宙ロケット工学実験

    2021.4 - 2022.3   Full year

  • 先端エネルギー理工学博士論文演習

    2021.4 - 2022.3   Full year

  • 物理概論

    2021.4 - 2021.9   First semester

  • 基礎材料力学

    2021.4 - 2021.9   First semester

  • 基礎材料力学Ⅰ

    2021.4 - 2021.6   Spring quarter

  • 電磁気学E

    2021.4 - 2021.6   Spring quarter

  • 先進宇宙ロケット工学演習

    2020.10 - 2021.3   Second semester

  • 電気推進工学特論

    2020.10 - 2021.3   Second semester

  • 九大で学ぶ宇宙科学と技術B

    2020.6 - 2020.8   Summer quarter

  • Doctoral Research (III)

    2020.4 - 2021.3   Full year

  • エネルギー科学とマネージメントⅢ

    2020.4 - 2021.3   Full year

  • 先進宇宙ロケット工学実験

    2020.4 - 2021.3   Full year

  • 先進宇宙ロケット工学演習

    2019.10 - 2020.3   Second semester

  • 先進宇宙ロケット工学演習

    2019.10 - 2020.3   Second semester

  • 電気推進工学特論

    2019.10 - 2020.3   Second semester

  • 創造科学工学基礎実験

    2019.10 - 2020.3   Second semester

  • 電気推進工学特論

    2019.10 - 2020.3   Second semester

  • エネルギーシステム工学実践演習

    2019.10 - 2019.12   Fall quarter

  • 基礎材料力学Ⅱ

    2019.6 - 2019.8   Summer quarter

  • 先進宇宙ロケット工学実験

    2019.4 - 2020.3   Full year

  • エネルギー変換計測工学

    2019.4 - 2019.9   First semester

  • 電磁気学E

    2019.4 - 2019.6   Spring quarter

  • 基礎材料力学Ⅰ

    2019.4 - 2019.6   Spring quarter

  • 基幹物理学ⅠB

    2018.10 - 2019.3   Second semester

  • 創造科学工学基礎実験

    2018.10 - 2019.3   Second semester

  • 電気推進工学特論

    2018.10 - 2019.3   Second semester

  • 先進宇宙ロケット工学演習

    2018.10 - 2019.3   Second semester

  • エネルギーシステム工学実践演習

    2018.10 - 2018.12   Fall quarter

  • エネルギーシステム工学実践演習

    2018.10 - 2018.12   Fall quarter

  • 先進宇宙ロケット工学実験

    2018.4 - 2019.3   Full year

  • 先進宇宙ロケット工学特論

    2018.4 - 2018.9   First semester

  • 基礎材料力学

    2018.4 - 2018.9   First semester

  • 電磁気学E

    2018.4 - 2018.6   Spring quarter

  • 先進宇宙ロケット工学演習

    2017.10 - 2018.3   Second semester

  • 基幹物理学ⅠB

    2017.10 - 2018.3   Second semester

  • 基幹物理学ⅠB

    2017.10 - 2018.3   Second semester

  • 電気推進工学特論

    2017.10 - 2018.3   Second semester

  • エネルギーシステム工学実践演習

    2017.10 - 2017.12   Fall quarter

  • 先端エネルギー変換工学特別講究

    2017.4 - 2018.3   Full year

  • エネルギー科学特別講義Ⅳ

    2017.4 - 2018.3   Full year

  • 先端エネルギー理工学博士論文演習

    2017.4 - 2018.3   Full year

  • 産業活動実習

    2017.4 - 2018.3   Full year

  • 先進宇宙ロケット工学実験

    2017.4 - 2018.3   Full year

  • Advanced Space Propulsion Engineering

    2017.4 - 2017.9   First semester

  • 電磁気学E

    2017.4 - 2017.9   First semester

  • 基礎材料力学

    2017.4 - 2017.9   First semester

  • 先進宇宙ロケット工学特論

    2017.4 - 2017.9   First semester

  • Energy Conversion Measurement Engineering

    2017.4 - 2017.9   First semester

  • Advanced Topics of Electric Propulsion Engineering

    2017.4 - 2017.9   First semester

  • プラズマ理工学

    2016.10 - 2017.3   Second semester

  • 電気推進工学特論

    2016.10 - 2017.3   Second semester

  • エネルギーシステム工学実践演習

    2016.10 - 2017.3   Second semester

  • 先進宇宙ロケット工学演習

    2016.10 - 2017.3   Second semester

  • 課題集約演習

    2016.10 - 2017.3   Second semester

  • 先進宇宙ロケット工学実験

    2016.4 - 2017.3   Full year

  • 電磁気E

    2016.4 - 2016.9   First semester

  • 先進宇宙ロケット工学特論

    2016.4 - 2016.9   First semester

  • 先端エネルギー理工学博士論文演習

    2016.4 - 2016.9   First semester

  • エネルギー工学実験

    2016.4 - 2016.9   First semester

  • エネルギー変換計測工学

    2016.4 - 2016.9   First semester

  • 課題集約演習

    2015.10 - 2016.3   Second semester

  • プラズマ理工学

    2015.10 - 2016.3   Second semester

  • 電気推進工学特論

    2015.10 - 2016.3   Second semester

  • エネルギーシステム工学実践演習

    2015.10 - 2016.3   Second semester

  • 先進宇宙ロケット工学演習

    2015.10 - 2016.3   Second semester

  • 先進宇宙ロケット工学実験

    2015.4 - 2016.3   Full year

  • エネルギー変換計測工学

    2015.4 - 2015.9   First semester

  • 電磁気E

    2015.4 - 2015.9   First semester

  • 先端エネルギー理工学博士論文演習

    2015.4 - 2015.9   First semester

  • エネルギー工学実験

    2015.4 - 2015.9   First semester

  • 電磁気E

    2014.10 - 2015.3   Second semester

  • 課題集約演習

    2014.10 - 2015.3   Second semester

  • 先進宇宙ロケット工学演習

    2014.10 - 2015.3   Second semester

  • エネルギーシステム工学実践演習

    2014.10 - 2015.3   Second semester

  • 電気推進工学特論

    2014.10 - 2015.3   Second semester

  • プラズマ理工学

    2014.10 - 2015.3   Second semester

  • 先進宇宙ロケット工学実験

    2014.4 - 2015.3   Full year

  • 先端エネルギー理工学博士論文演習

    2014.4 - 2014.9   First semester

  • 平成26年度フロントリサーチャー先端学際科学講義

    2014.4 - 2014.9   First semester

  • エネルギー変換計測工学

    2014.4 - 2014.9   First semester

  • 先進宇宙ロケット工学特論

    2014.4 - 2014.9   First semester

  • エネルギー工学実験

    2014.4 - 2014.9   First semester

  • 電気推進工学特論

    2013.10 - 2014.3   Second semester

  • 課題集約演習

    2013.10 - 2014.3   Second semester

  • 先進宇宙ロケット工学演習

    2013.10 - 2014.3   Second semester

  • エネルギーシステム工学実践演習

    2013.10 - 2014.3   Second semester

  • 先進宇宙ロケット工学実験

    2013.4 - 2014.3   Full year

  • 先端エネルギー理工学博士論文演習

    2013.4 - 2013.9   First semester

  • エネルギー変換計測工学

    2013.4 - 2013.9   First semester

  • 先進宇宙ロケット工学特論

    2013.4 - 2013.9   First semester

  • エネルギー工学実験

    2013.4 - 2013.9   First semester

  • コアセミナー

    2013.4 - 2013.9   First semester

  • 次世代核分裂炉システム工学演習

    2012.10 - 2013.3   Second semester

  • 課題集約演習

    2012.10 - 2013.3   Second semester

  • 次世代核分裂炉システム工学実験

    2012.4 - 2013.3   Full year

  • エネルギー変換熱流体工学

    2012.4 - 2012.9   First semester

  • 量子ビーム理工学特論

    2012.4 - 2012.9   First semester

  • エネルギー工学実験

    2012.4 - 2012.9   First semester

  • コアセミナー

    2012.4 - 2012.9   First semester

  • エネルギーシステム工学概論

    2012.4 - 2012.9   First semester

  • Tutorials on Interdisciplinary Engineering Sciences(Energy)

    2011.10 - 2012.3   Second semester

  • 課題集約演習

    2011.10 - 2012.3   Second semester

  • 量子ビーム理工学特論

    2011.4 - 2011.9   First semester

  • コアセミナー

    2011.4 - 2011.9   First semester

  • エネルギー工学実験

    2011.4 - 2011.9   First semester

  • エネルギー工学演習Ⅱ

    2011.4 - 2011.9   First semester

  • 課題集約演習

    2010.10 - 2011.3   Second semester

  • コアセミナー

    2010.4 - 2010.9   First semester

  • エネルギー工学演習Ⅱ

    2010.4 - 2010.9   First semester

  • エネルギー工学実験

    2010.4 - 2010.9   First semester

  • 課題集約演習

    2009.10 - 2010.3   Second semester

  • エネルギー工学演習Ⅱ

    2009.4 - 2009.9   First semester

  • コアセミナー

    2009.4 - 2009.9   First semester

  • エネルギー工学実験

    2009.4 - 2009.9   First semester

  • エネルギー工学実験

    2008.4 - 2008.9   First semester

  • コアセミナー

    2008.4 - 2008.9   First semester

  • エネルギー工学演習Ⅱ

    2008.4 - 2008.9   First semester

  • コアセミナー

    2007.4 - 2007.9   First semester

  • エネルギー工学実験

    2007.4 - 2007.9   First semester

  • エネルギー工学演習Ⅱ

    2007.4 - 2007.9   First semester

  • 物理実験

    2006.4 - 2006.9   First semester

  • エネルギー工学実験

    2006.4 - 2006.9   First semester

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FD Participation

  • 2020.12   Role:Participation   Title:高圧ガス及び液化ガスを安全に取り扱うための講習会

    Organizer:University-wide

  • 2020.9   Role:Participation   Title:科研費セミナー(学内:研究者対象)」

    Organizer:University-wide

  • 2018.11   Role:Planning   Title:総理工セミナー

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2018.6   Role:Participation   Title:アイソトープ統合センター研修

    Organizer:University-wide

  • 2017.8   Role:Participation   Title:平成30年度科学研究費助成事業獲得セミナー(学内:研究者対象)」

    Organizer:University-wide

  • 2017.8   Role:Participation   Title:局所排気装置講習

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2016.9   Role:Participation   Title:sciVal講習会

    Organizer:University-wide

  • 2016.8   Role:Participation   Title:平成29年度科学研究費助成事業獲得セミナー(学内:研究者対象)」

    Organizer:University-wide

  • 2016.5   Role:Participation   Title:筑紫地区化学物質リスクアセスメント実施講習会

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2015.4   Role:Participation   Title:リスクアセスメント説明会

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2015.1   Role:Participation   Title:平成26年度グローバル対応化研修_英語による教授法指導コース

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2014.8   Role:Participation   Title:遠隔講義・会議システムの説明会

    Organizer:University-wide

  • 2014.3   Role:Participation   Title:グローバル化対応研修・多文化理解力向上コース

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2013.9   Role:Participation   Title:科学研究費助成事業 公募要領等説明会

    Organizer:University-wide

  • 2013.2   Role:Participation   Title:平成24年度 安全保障輸出管理手続き説明会

    Organizer:University-wide

  • 2012.11   Role:Participation   Title:平成24年度ハラスメント防止に関する研修会

    Organizer:University-wide

  • 2012.9   Role:Participation   Title:電子教材 著作権講習会

    Organizer:University-wide

  • 2012.9   Role:Participation   Title:科学研究費助成事業 公募要領等説明会

    Organizer:University-wide

  • 2011.11   Role:Participation   Title:平成23年度 安全保障輸出管理手続き説明会

    Organizer:University-wide

  • 2011.10   Role:Participation   Title:平成23年度 九州大学情報統括本部支線LAN 講習会

    Organizer:University-wide

  • 2011.9   Role:Participation   Title:「英語による教授能力」向上のためのワークショップ

    Organizer:University-wide

  • 2011.9   Role:Participation   Title:総合理工学府FD 九州大学における男女共同参画

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2011.4   Role:Participation   Title:総合理工学府FD 学生のメンタルヘルスについて.

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2010.10   Role:Participation   Title:平成22年度 九州大学情報統括本部支線LAN 講習会

    Organizer:University-wide

  • 2010.4   Role:Participation   Title:巡視補助者会議

    Organizer:[Undergraduate school/graduate school/graduate faculty]

  • 2009.3   Role:Participation   Title:平成20年度 九州大学情報統括本部支線LAN 講習会

    Organizer:University-wide

  • 2008.4   Role:Participation   Title:適正な研究活動に向けた説明会

    Organizer:University-wide

  • 2007.4   Role:Participation   Title:平成19年度 第1回全学FD

    Organizer:University-wide

  • 2007.3   Role:Participation   Title:『魅力ある大学院教育』 イニシアティブ - ものづくり型実践的研究人材の戦略的育成 - シンポジウム

    Organizer:[Undergraduate school/graduate school/graduate faculty]

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Other educational activity and Special note

  • 2018  Class Teacher 

  • 2017  Class Teacher 

  • 2016  Class Teacher 

  • 2015  Class Teacher 

Outline of Social Contribution and International Cooperation activities

  • コロラド州立大学およびフランス原子力および代替エネルギー庁とホールスラスタの研究に関して共同研究を推進している

Social Activities

  • 工学部出前講義

    倉敷青陵高校  2023.12

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 福岡高校との高大連携プログラム

    福岡高校  九州大学筑紫キャンパス  2019.7

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Other

    20人規模の高校生を受け入れ、大学で研究するとは、どのような事なのか実際に触れてもらう企画であり、さらにOB、OGとの懇談を通して、大学とはどういうところかという雰囲気を味わうことにより、モチベーションの向上並びに大学へのスムーズな接続を計る。

  • 「工学-アイデアを実現していく学問プラズマロケット開発を通して-」

    春吉中学  2018.9

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 宇宙にも拡がる電化の流れ

    福岡県立育徳館高等学校出前講義  2018.7

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • SSH受け入れ

    城南高校  2018.6

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 福岡高校との高大連携プログラム

    福岡高校  九州大学筑紫キャンパス  2018.4

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Seminar, workshop

    20人規模の高校生を受け入れ、大学で研究するとは、どのような事なのか実際に触れてもらう企画であり、さらにOB、OGとの懇談を通して、大学とはどういうところかという雰囲気を味わうことにより、モチベーションの向上並びに大学へのスムーズな接続を計る。

  • SSH受け入れ

    城南高校  2017.6

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Other

  • 九州大学公開講座 最先端•次世代プラズマ科学 -万物流転の法則から医療滅菌まで- 人類は火を手に入れて文明を築き上げたと考える人もいます。現代では人類は"プラズマ"を手に入れました。プラズマを知る事で森羅万象万物流転の法則に迫り、プラズマを使って水の浄化や医療滅菌する事で安全安心な暮らしを実現します。本講座ではこのプラズマの学問としての進展と近未来社会を拓く応用技術について、九州大学の最先端の研究を例に分かりやすくご紹介します。

    総合理工学府  春日キャンパス  2013.8

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    Audience: General, Scientific, Company, Civic organization, Governmental agency

    Type:Lecture

    これまで、宇宙の物質(ダークマターやダークエネルギーを除く)の99%はプラズマ状態にあるといわれています。そのため,宇宙開発において,プラズマを無視することは出来ません.太陽からのプラズマは太陽電池の破壊を起こすこともありますが,推進力を生むロケットエンジンなどにもプラズマは利用されるなど,多くの利点もあります.第四回目の講義では、その中でも次世代のロケットエンジンとして近年注目を集めているプラズマロケットの話題を中心に、宇宙開発とプラズマの関係を解説します。

  • プラズマと宇宙開発 プラズマは地上ではほとんど見ることが出来ませんが,宇宙に行けば,最も存在 する状態であります.そのため,宇宙開発において,プラズマを無視することは 出来ません.プラズマは太陽電池の破壊を起こすこともありますが,推進力を生 むロケットエンジンなどにもプラズマは利用されるなど,多くの利点もありま す.その中でも次世代のロケットエンジンとして近年注目を集めているプラズマ ロケットの話題を中心に,宇宙開発とプラズマの関係を解説します.

    2013.8

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • キャンパスアジアサマースクール受け入れ

    2013

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    キャンパスアジアサマースクール受け入れ

  • 徳山高専における課外授業

    徳山高専  2012.5

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Seminar, workshop

  • 城南高校SPP講座受け入れ

    春日高校  2011.7

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    Audience: Infants, Schoolchildren, Junior students, High school students

    Type:Other

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Activities contributing to policy formation, academic promotion, etc.

  • 2018.10   レーザー学会

    レーザー夏の学校 講師

Educational Activities for Highly-Specialized Professionals in Other Countries

  • 2018.10   台湾成功大学との研究交流

    Main countries of student/trainee affiliation:Taiwan, Province of China

    Other countries of student/trainee affiliation:台湾

  • 2018.5 - 2018.7   インターンシップ

    Main countries of student/trainee affiliation:India

Travel Abroad

  • 2022.8 - 2023.3

    Staying countory name 1:United States   Staying institution name 1:コロラド州立大学

  • 2020.2 - 2020.7

    Staying countory name 1:France   Staying institution name 1:フランス原子力および代替エネルギー庁

  • 2018.11

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:台湾成功大学

  • 2017.3 - 2017.4

    Staying countory name 1:Taiwan, Province of China   Staying institution name 1:台湾成功大学

  • 2016.4

    Staying countory name 1:China   Staying institution name 1:上海交通大学

  • 2014.8

    Staying countory name 1:China   Staying institution name 1:上海交通大学

  • 2013.10

    Staying countory name 1:United States   Staying institution name 1:George Washington University in Washington, D.C., USA

  • 2012.7 - 2012.8

    Staying countory name 1:United States   Staying institution name 1:GRAND HYATT ATLANTA

  • 2009.9

    Staying countory name 1:United States   Staying institution name 1:University of Michigan

  • 2008.7 - 2009.1

    Staying countory name 1:United States   Staying institution name 1:Colorado State University

  • 2007.9

    Staying countory name 1:Italy   Staying institution name 1:Florence

  • 2007.8 - 2008.3

    Staying countory name 1:United States   Staying institution name 1:Colorado State University

  • 2004.7

    Staying countory name 1:United States   Staying institution name 1:不明

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