Updated on 2025/06/15

写真a

 
KATAYAMA KAZUNARI
 
Organization
Faculty of Engineering Sciences Department of Advanced Energy Science and Engineering Professor
Interdisciplinary Graduate School of Engineering Sciences Department of Interdisciplinary Engineering Sciences(Concurrent)
School of Engineering (Concurrent)
Title
Professor
Contact information
メールアドレス
Tel
0925837607
Profile
I am conducting research on the behavior of tritium, the fuel for nuclear fusion reactors, from the perspectives of mass transfer engineering and reaction engineering. Especially I am actively working on understanding mass transfer phenomena in the plasma facing walls (hydrogen isotope behavior associated with the formation of redeposited layers and dust), as well as the behavior of bred tritium in the blanket. These research are important from the perspective of the feasibility and safety of fusion reactor fuel cycles. Tritium behavior in environment is also my research target. At the same time, I am are also conducting research on technologies that can support a hydrogen-based society.
External link

Research Areas

  • Energy Engineering / Nuclear fusion

Degree

  • doctor of engineering

Research History

  • Kyushu University Faculty of Engineering Sciences Department of Advanced Energy Science and Engineering  Professor 

    2025.4 - Present

  • Kyushu University Faculty of Engineering Sciences Associate Professor 

    2012.11 - 2025.3

  • Kyushu University Faculty of Engineering Sciences Assistant Professor 

    2007.4 - 2012.10

  • Kyushu University Faculty of Engineering Sciences Research Assistant 

    2004.4 - 2007.3

Education

  • Kyushu University   Graduate School of Science and Engineering   Department of Advanced Energy Engineering Science

    2001.4 - 2004.3

  • Kyushu University   Graduate School of Science and Engineering   Department of Advanced Energy Engineering Science

    1999.4 - 2001.3

  • Kyushu University   School of Engineering   Department of Applied Nuclear Engineering

    1995.4 - 1999.3

Research Interests・Research Keywords

  • Research theme: Hydrogen

    Keyword: Hydrogen

    Research period: 2025

  • Research theme: Plasma facing wall in fusion reactors

    Keyword: Plasma facing wall in fusion reactors

    Research period: 2025

  • Research theme: deposition

    Keyword: deposition

    Research period: 2025

  • Research theme: Lithium

    Keyword: Lithium

    Research period: 2025

  • Research theme: Plasma decomposition

    Keyword: Plasma decomposition

    Research period: 2025

  • Research theme: Fluoride molten salt

    Keyword: Fluoride molten salt

    Research period: 2025

  • Research theme: Tritium

    Keyword: Tritium

    Research period: 2025

  • Research theme: Study on liquid lithium circulation and control technology

    Keyword: Liquid lithium, Tritium, Chemical control

    Research period: 2022.4

  • Research theme: Study on molten salt circulation and control technology aiming at development of molten salt reactors

    Keyword: Fluoride molten salt, tritium, chemical control

    Research period: 2019.4

  • Research theme: Fundamental study on tritium behavior in supercritical CO2 gas turbine power generation system

    Keyword: Tritium, supercritical CO2

    Research period: 2017.4

  • Research theme: A study on tritium production and confinement by high-temperature gas-cooled reactor

    Keyword: Tritium, High-temperature gas-cooled reactor

    Research period: 2013.4

  • Research theme: Development of tritium transfer model from soil to plants

    Keyword: Tritium, Soil, Plants

    Research period: 2012.4

  • Research theme: A study on mass transfer and tritiumu behavior in tritium breeding ceramics materials

    Keyword: Blanket system in fusion reactor, tritium, Lithium

    Research period: 2010.4

  • Research theme: Research and development of decomposition-recovery method of gaseous hydrogen compounds by plasma

    Keyword: Fusion reactor, Fuel processing, High-temperature Gas-cooled reactor, Coolant processing, Plasma decomposition, Hydrogen production

    Research period: 2006.4

  • Research theme: A study on mass transfer phenomena in plasma facing wall of fusion reactors

    Keyword: Plasma-wall interaction, tritium, mass transfer

    Research period: 2006.4

  • Research theme: A study on tritium behavior in liquid blanket materials

    Keyword: Tritium, Flibe(2LiF+BeF2)、Lead-Lithium, Lithium

    Research period: 2005.5

Awards

  • 令和5年度核融合炉工学共同研究優秀賞

    2024.7   量子科学技術研究開発機構   核融合中性子源ターゲットシステムの液体リチウム中不純物の計測に関する研究

    片山一成、森裕薫、片山翔太、小栁津誠

  • 令和3年度核融合炉工学共同研究優秀賞

    2022.6   量子科学技術研究開発機構   高温高圧三重水素および三重水素水蒸気からの金属壁を介した三重水素移行量評価

    片山一成、一本杉旭人、松本拓、染谷洋二

  • 日本原子力学会材料部会Best Figure賞

    2019.9   日本原子力学会材料部会   スパッタ成膜で形成されたタングステン堆積層の表面構造 大宅 諒、片山 一成 学術的に興味深く、かつ華麗なFigureを示した。

  • 日本原子力学会核融合工学部会奨励賞

    2012.9   日本原子力学会核融合工学部会   過去3年間に実施した核融合燃料トリチウムに関する研究、中でも「プラズマ対向壁堆積層形成に伴う水素同位体移行挙動に関する研究」において、核融合工学研究開発に関する優秀な成果を挙げたと認められた。

  • 核融合工学部会核融合工学部会奨励賞

    日本原子力学会核融合工学部会  

    片山 一成

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Papers

  • Deuterium retention in deposited W layer exposed to EAST deuterium plasma Reviewed International journal

    @K. Katayama, N. Ashikawa, F. Ding, H. Mao, H.S. Zhou, G.N. Luo, J. Wu, #M. Noguchi, @S. Fukada

    Nuclear Materials and Energy   12   617 - 621   2017.7

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

     The deposited W layers formed on the W plate by hydrogen plasma sputtering were exposed to deuterium plasma in EAST together with bare W plate. In TDS measurement, the deuterium release was clearly observed from the deposited W layer in addition to the release of hydrogen which was incorporated during the sputtering-deposition processes. On the other hand, the release of hydrogen isotope was not detected from the bare W plate. This suggests that the formation of deposited W layers increases tritium inventory in the plasma confinement vessel. Although the thermocouple contacting to the backside of the W plate did not indicate a remarkable temperature rise, deuterium release peaks from the W layer were close to that from the W layer irradiated by 2 keV D2 + at 573 K. It was found by glow discharge optical emission spectrometry analysis that retained deuterium in the W layer has a peak at the depth of 50 nm and gradually decreases toward the W substrate. From X-ray photoelectron spectroscopy analysis, it was evaluated that W oxide existed just at the surface and W atoms in the bulk of deposited W layer were not oxidized. These data suggest that hydrogen isotopes are not retained in W oxide but grain boundaries.

  • Direct Decomposition Processing of Tritiated Methane by Helium RF Plasma Reviewed International journal

    @Kazunari Katayama, @Satoshi Fukada

    Fusion Science and Technology   71 ( 3 )   426 - 431   2017.4

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

     With the aim of developing a method for the recovery of tritium from tritium-bearing hydrocarbons, it was shown experimentally that methane can be decomposed directly into hydrogen and carbon in RF plasmas via reactions initiated by electrons. Measurements performed with CH4 and CH3T in a helium RF plasma indicate that the degree of decomposition of CH3T is substantially smaller than that of CH4. This is considered to be caused by a very low concentration of CH3T. It was found that a majority of tritium dissociated from CH3T is retained in the plasma reactor. However, a certain amount of retained tritium could be removed by a discharge-cleaning of oxygen.

  • Estimation of Tritium Permeation Rate to Cooling Water in Fusion DEMO Condition Reviewed International journal

    @Kazunari Katayama, Youji Someya, Kenji Tobita, Hirofumi Nakamura, Hisashi Tanigawa, Makoto Nakamura, Nobuyuki Asakura, Kazuo Hoshino, Takumi Chikada, Yuji Hatano, Satoshi Fukada

    Fusion Science and Technology   71 ( 3 )   261 - 267   2017.4

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

     The approximate estimation of tritium permeation rate under the acceptable assumption from a safety point of view is surely useful to progress the design activities for a fusion DEMO reactor. Tritium permeation rates in the blanket and the divertor were estimated by the simplified evaluation model under the recent DEMO conditions in the water-cooled blanket with solid breeder as a first step. Plasma driven permeation rates in tungsten wall were calculated by applying Doyle & Brice model and gas driven permeation rates in F82H were calculated for hydrogen-tritium two-component system. In the representative recent DEMO condition, the following tritium permeation
    ates were obtained, 1.8 g/day in the blanket first wall, 2.3 g/day in the blanket tritium breeding region and 1.6 g/day in the divertor. Total tritium permeation rate into the cooling water was estimated to be 5.7 g/day.

  • Evaluation of Tritium Confinement Performance of Alumina and Zirconium for Tritium Production in a High-Temperature Gas-Cooled Reactor for Fusion Reactors Reviewed International journal

    @Kazunari Katayama, #Hiroki Ushida, @Hideaki Matsuura, @Satoshi Fukada, Minoru Goto, Shigeaki Nakagawa

    Fusion Science and Technology   68 ( 3 )   662 - 668   2015.10

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

     Tritium production utilizing nuclear reactions by neutron and lithium in a high-temperature gas-cooled reactor is attractive for development of a fusion reactor. From viewpoints of tritium safety and recovery efficiency, tritium confinement is an important issue. It is known that alumina has high resistance for gas permeation. In this study, hydrogen permeation experiments in commercial alumina tubes were conducted and hydrogen permeability, diffusivity and solubility were evaluated. By using obtained data, tritium permeation behavior from an Al2O3-coated Li-compound particle was simulated. Additionally, by using literature data for hydrogen behavior in zirconium, an effect of Zr incorporation into an Al2O3 coating on tritium permeation was discussed. It was indicated that the majority of produced tritium was released through the Al2O3 coating above 500 °C. However, it is expected that total tritium leak is suppressed to below 0.67 % of total tritium produced at 500 °C by incorporating Zr fine particles into the inside of Al2O3 coating, assuming tritium pressure inside particle is kept at the plateau pressure of the Zr hydride generation reaction.

  • Release behavior of water vapor and mass loss from lithium titanate Reviewed International journal

    Kazunari Katayama, Hideaki Kashimura, Tsuyoshi Hoshino, Masabumi Nishikawa, Hideki Yamasaki, Ishinichiro Ishikawa, Yasuhito Ohnishi

    Fusion Engineering and Design   87 ( 5-6 )   927 - 931   2012.8

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

    Release behavior of water vapor and mass loss from lithium titanate

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Books

  • Safety confinement system

    Kazunari Katayama, Masabumi Nishikawa(Role:Joint author)

    Springer Japan  2016.1 

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    Responsible for pages:297-329   Language:English   Book type:Scholarly book

    A large amount of T is used as a fuel in a fusion reactor, but its release to the environment is rigidly regulated to be quite low by law. In order to protect workers, the public, and the environment from radiation of T, it is very important to confine T safely. The first section explains basics of radiation protection and indicates specified values relating to T safety confinement such as dose limit. T has a property of permeating easily through even metals. Therefore, the T release to the environment is suppressed by multiple confinements system based on the concept of defense in depth. The multiple-confinement system has been adopted in many T handling facilities in the world and operated successfully for many years. The second section explains the concept and practical configuration of the multiple confinements system in the present T handling facilities and a fusion power plant. In the fusion power plant, various kinds of wastes contaminated by T would be generated. It is necessary to pay careful attention in handling of these T contaminated wastes. The third section explains the management and processing of the T contaminated wastes.

    DOI: 10.1007/978-4-431-56460-7_14

  • Recovery of tritium bred in blanket

    Kazunari Katayama, Masabumi Nishikawa(Role:Joint author)

    Springer Japan  2016.1 

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    Responsible for pages:273-294   Language:English   Book type:Scholarly book

    In order to ensure tritium (T) fuel self-sufficiency in a fusion power plant, key issues are full recovery of T generated in breeder materials and minimization of T loss in all fuel cycle systems. To realize the full recovery, T behavior in the breeder materials has to be understood, and the optimal T extraction system has to be designed. In this chapter, firstly, solid breeder materials and liquid breeder materials are introduced. Then, characteristics of T release from the solid breeder materials are explained, and a T release model is introduced. Finally, tritium extraction from liquid breeder materials is briefly explained.

    DOI: 10.1007/978-4-431-56460-7_13

Presentations

  • Direct decomposition of methane using helium RF plasma International conference

    K.Katayama,S.Fukada, M.Nishikawa

    9th International Symposium on Fusion Nuclear Technology  2009.10 

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    Event date: 2009.10

    Venue:Dalian   Country:China  

  • DEUTERIUM AND HELIUM RELEASE AND MICROSTRUCTURE OF TUNGSTEN DEPOSITION LAYERS FORMED BY RF PLASMA SPUTTERING International conference

    K. Katayama, K. Imaoka, M. Tokitani, M. Miyamoto, M. Nishikawa, S. Fukada and N. Yoshida

    8th International Conference on Tritium Science and Technology  2007.9 

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    Event date: 2007.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rochester, New York, USA   Country:United States  

  • INCORPORATION OF HYDROGEN IN CARBON–TUNGSTEN CO-DEPOSITION LAYERS FORMED BY HYDROGEN PLASMA SPUTTERING International conference

    K. Katayama, T. Okamura, K. Imaoka, M. Sasaki, Y. Uchida, M. Nishikawa, S. Fukada

    17th Topical Meeting on the Technology of Fusion Energy (TOFE2006)  2006.11 

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    Event date: 2006.11

    Presentation type:Oral presentation (general)  

    Venue:Albuquerque, New Mexico, USA   Country:United States  

  • Hydrogen and helium trapping in tungsten deposition layer formed by RF plasma sputtering International conference

    K. Katayama, K. Imaoka, T. Okamura, M. Nishikawa

    24th Symposium on Fusion Technology  2006.9 

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    Event date: 2006.9

    Language:English   Presentation type:Symposium, workshop panel (public)  

    Venue:Warsaw, Poland   Country:Poland  

  • Tritium release behavior from FLiNaBe mixed with Ti

    片山 一成, 瀬戸口祐輝, 赤司健太, 浜地志憲, 田中照也, 芦川直子

    日本原子力学会2025年春の大会  2025.3  日本原子力学会

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    Event date: 2025.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン   Country:Japan  

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MISC

  • 小特集 核融合原型炉における運転計画と商用炉に向けた戦略 トリチウムサイクル・取扱技術

    片山一成

    プラズマ・核融合学会誌   2018.11

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

    原型炉運転計画に関わるトリチウムサイクル・取扱技術について記述する.計画全体を通じての要求を満足する燃料サイクルシステムを当初から導入し,予め運転技術を実証しておく必要がある.試運転以降は,運転計画の進捗と並行して,要求されるトリチウムサイクル・取扱技術を順次実証していく.定常的にDT運転が行われる段階に入ると,増殖トリチウムや回収トリチウムの再利用を含めたプラント全体のインベントリー評価とその能動的制御が可能となる.以降は,システムの動的挙動をモデル化し,長期連続安定運転を実証しつつ,トリチウム取扱機器保守技術の実証や故障率データの取得を行っていく.

  • Study on T production method using high-temperature gas-cooled reactor for fusion reactors~Hydrogen absorption property of Ni-coated Zr sphere~

    松浦秀明, 川井大海, 北川堪大, 古屋碧海, 片山一成, 大塚哲平, 中川繁昭, 石塚悦男, 飛田健次, 染谷洋二, 坂本宜照

    日本原子力学会春の年会予稿集(CD-ROM)   2024   2024

  • Study on tritium production using high-temperature gas-cooled reactor for fusion reactors~Structure of the irradiation test module and experimental method~

    北川堪大, 松浦秀明, 川井大海, 片山一成, 大塚哲平, 石塚悦男, 中川繁昭, 後藤実, 飛田健次, 小西哲之, 染谷洋二, 坂本宜照

    日本原子力学会秋の大会予稿集(CD-ROM)   2023   2023

  • Study on T production using high-temperature gas-cooled reactor for fusion reactors (3) Hydrogen-absorption performance of Ni-coated Zr spheres and preparation of the irradiation test module

    松浦秀明, 阿部泰成, 北川堪大, 川井大海, 片山一成, 大塚哲平, 後藤実, 中川繁昭, 石塚悦男, 濱本真平, 飛田健次, 小西哲之, 染谷洋二, 坂本宜照

    日本原子力学会春の年会予稿集(CD-ROM)   2023   2023

  • Study on T production using high-temperature gas-cooled reactor for fusion reactors (2) Hydrogen absorption properties of Ni coated hydrogen storage metals coexisted with oxides

    大塚哲平, 山下和輝, 松浦秀明, 片山一成, 後藤実, 中川繁昭, 石塚悦男, 濱本真平

    日本原子力学会春の年会予稿集(CD-ROM)   2023   2023

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Professional Memberships

  • プラズマ・核融合学会

  • ATOMIC ENERGY SOCIETY OF JAPAN

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  • THE SOCIETY OF CHEMICAL ENGINEERS, JAPAN

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Committee Memberships

  • 日本原子力学会九州支部   庶務幹事   Domestic

    2024.4 - 2025.3   

  • 日本原子力学会核融合工学部会   Organizer   Domestic

    2018.5 - 2019.4   

  • 日本原子力学会核融合工学部会   庶務幹事(筆頭)   Domestic

    2018.5 - 2019.4   

  • 日本原子力学会核融合工学部会   Organizer   Domestic

    2017.5 - 2018.4   

  • 日本原子力学会核融合工学部会   庶務幹事(筆頭)   Domestic

    2017.5 - 2018.4   

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Academic Activities

  • 機能材料セッション座長

    Role(s): Panel moderator, session chair, etc.

    日本原子力学会「2025年春の年会」  ( Japan ) 2025.3

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    Type:Competition, symposium, etc. 

  • 先進核融合炉材料工学セッション座長

    Role(s): Panel moderator, session chair, etc.

    日本原子力学会「2024年秋の大会」  ( Japan ) 2024.9

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    Type:Competition, symposium, etc. 

  • 座長

    日本原子力学会「2024年春の年会」  ( Japan ) 2024.3

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    Type:Competition, symposium, etc. 

  • 座長 International contribution

    15th International Symposium on Fusion Nuclear Technology (ISFNT-15)  ( Palmas de Gran Canaria Spain ) 2023.9

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    Type:Competition, symposium, etc. 

  • 座長

    日本原子力学会「2023年秋の大会」  ( Japan ) 2023.9

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    Type:Competition, symposium, etc. 

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Research Projects

  • 食用植物における有機結合型トリチウムの輸送・蓄積・排出速度評価と挙動モデルの構築

    Grant number:25K00984  2025.4 - 2029.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    片山 一成

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    Grant type:Scientific research funding

    CiNii Research

  • 高温ガス炉を用いたトリチウム製造用リチウム装荷体の検討

    2024.7 - 2025.1

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Joint research

  • 原型炉TBMシステムにおける要素技術課題の検証手法検討

    2024.7 - 2025.1

    Joint research

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    Authorship:Coinvestigator(s)  Grant type:Joint research

  • 原型炉燃料循環システムに有効な燃料精製プロセスの検討

    2024.6 - 2025.1

    Joint research

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    Authorship:Principal investigator  Grant type:Joint research

  • 先進トリチウム増殖材料のLi質量移行とトリチウム放出特性への影響評価(6)

    2024.5 - 2025.3

    Joint research

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

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Educational Activities

  • 融合基礎工学科の学部生教育
    エネルギー科学科の学部生教育
    総合理工学専攻の大学院生教育
    研究室内の大学院生および学部生の研究指導
    他大学の学生等への放射線計測教育

Class subject

  • 量子エネルギー工学概論

    2025.4 - 2025.9   First semester

  • プロセス化学工学

    2024.10 - 2025.3   Second semester

  • Fusion Reactor System Engineering

    2024.10 - 2024.12   Fall quarter

  • 総合理工学修士実験

    2024.4 - 2025.3   Full year

  • 総合理工学修士演習

    2024.4 - 2025.3   Full year

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FD Participation

  • 2013.3   Role:Participation   Title:支線LAN講習会

    Organizer:University-wide

  • 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]

  • 2007.4   Role:Participation   Title:新任教員の研修

    Organizer:University-wide

Participation in international educational events, etc.

  • 2022.1

    Politeknik Negeri Jakarta (ジャカルタ州立工科大学)

    Webinar "Towards Energy Storage and Smart Green Vehicle Development"

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    Venue:オンライン(インドネシア・デポック)

    Number of participants:30

Other educational activity and Special note

  • 2024  Class Teacher  学部

  • 2024  Special Affairs  原子力規制人材育成事業 「放射線規制及び災害に対応可能な実践力を有する放射線取扱主任者育成」に参画し、全国から登録した理工系学生に対して電離箱によるトリチウムベータ線計測実習を実施

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    原子力規制人材育成事業 「放射線規制及び災害に対応可能な実践力を有する放射線取扱主任者育成」に参画し、全国から登録した理工系学生に対して電離箱によるトリチウムベータ線計測実習を2024年9月と2025年2月に実施

  • 2023  Class Teacher  学部

  • 2023  Special Affairs  原子力規制人材育成事業 「放射線規制及び災害に対応可能な実践力を有する放射線取扱主任者育成」に参画し、全国から登録した理工系学生に対して電離箱によるトリチウムベータ線計測実習を実施

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    原子力規制人材育成事業 「放射線規制及び災害に対応可能な実践力を有する放射線取扱主任者育成」に参画し、全国から登録した理工系学生に対して電離箱によるトリチウムベータ線計測実習を実施

  • 2022  Class Teacher  学部

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Outline of Social Contribution and International Cooperation activities

  • 日米科学技術協力事業や国際会議等への寄与を通じて国際的学術交流を図り、規制庁原子力人材育成事業を通じて原子力・放射線教育に寄与するなど。

Social Activities

  • 玄海原子力発電所 乾式貯蔵施設の設置について

    佐賀県  佐賀市など  2021.7

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

    Type:Other

    玄海原子力発電所 乾式貯蔵施設の設置について、第9回の原子力安全専門部会が開催され、専門的立場から意見を述べた。

  • 玄海原子力発電所3号機の使用済燃料貯蔵設備の増強等について

    佐賀県  佐賀市など  2020.3

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

    Type:Other

    玄海原子力発電所3号機使用済燃料プールのリラッキング、および蒸気発生器保管庫の共用について、第8回の原子力安全専門部会が開催され、専門的立場から意見を述べた。

  • 原子力人材育成事業 放射線計測実習 将来、初等・中等教育を担う学生に対して放射線計測の実習をおこなった。

    北海道教育大学釧路校  2019.12

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

    Type:Seminar, workshop

  • 原子力人材育成事業 放射線計測実習 将来、初等・中等教育を担う学生に対して放射線計測の実習をおこなった。

    北海道教育大学釧路校  2018.12

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

    Type:Seminar, workshop

  • 原子力人材育成事業 放射線計測実習 将来、初等・中等教育を担う学生に対して放射線計測の実習をおこなった。

    兵庫教育大学  2018.11

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

    Type:Seminar, workshop

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Acceptance of Foreign Researchers, etc.

  • 九州大学

    Acceptance period: 2021.2 - Present   (Period):1 month or more

    Nationality:Indonesia

  • 山西農業大学

    Acceptance period: 2018.12 - 2020.1   (Period):1 month or more

    Nationality:China

Travel Abroad

  • 2019.12

    Staying countory name 1:China   Staying institution name 1:上海応用物理研究所(SINAP,上海)

  • 2019.11

    Staying countory name 1:China   Staying institution name 1:上海応用物理研究所(SINAP,上海)

  • 2019.11

    Staying countory name 1:United States   Staying institution name 1:カリフォルニア大学バークレー校

  • 2018.3

    Staying countory name 1:China   Staying institution name 1:西南物理研究院(SWIP,成都)

    Staying institution name 2:四川大学(成都)

  • 2016.7

    Staying countory name 1:Korea, Republic of   Staying institution name 1:Dongguk University

    Staying institution name 2:Seoul National University

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