Kyushu University Academic Staff Educational and Research Activities Database
List of Presentations
kazuhiro Yasuda Last modified date:2019.06.20

Associate Professor / Division of Quantum Science of Materials / Department of Applied Quantum Physics and Nuclear Engineering / Faculty of Engineering


Presentations
1. K. Yasuda, S. Matsumura, Unique applications of high voltage electron microscopy for materials sciences, The 3rd Japan-Taiwan International Engineering Forum, 2019.02.
2. P. Seo, AKM I.S. Bhuian, J.M. Costantini, S. Matsumura, K. Yasuda, In-situ cathodoluminescence in ceria induced by high-energy electron irradiation, 日本金属学会 日本鉄鋼協会 軽金属学会 九州支部 2019年度 合同学術講演会, 2019.06.
3. Y. Yamaguchi, T. Yamamot, S. Yoshioka, K. Yasuda, S. Matsumura, S. Takaki,  N. Ishikawa, Structure and Accumulation of Ion Tracks in YSZ Induced by High Density Electronic Excitation, Materials Research Society Japan Symposium: “Innovative Material Technologies Utilizing Ion Beams”, 2018.12.
4. M.M. Rahman, T. Yamamoto, Y. Yamaguchi, K. Yasuda, S. Matsumura, S. Takaki, M. Takano, In-situ Observation of Radiation-Induced Defects in ZrN under Electron Irradiation in HVEM , Materials Research Society Japan Symposium: “Innovative Material Technologies Utilizing Ion Beams”, 2018.12.
5. P. Seo, AKM I.S. Bhuian, J.M. Costantini, S. Matsumura, K. Yasuda, In-situ Cathodoluminescence in Cerium Dioxide Induced by High-Energy Electron Irradiation , Materials Research Society Japan Symposium: “Innovative Material Technologies Utilizing Ion Beams”, 2018.12.
6. S. Yoshioka , K. Tsuruta , T. Yamamoto , K. Yasuda , S. Matsumura, N. Ishikawa, E. Kobayashi, Investigation of cation disordering in magnesium aluminate spinel induced by SHI usig X-ray absorption near edge structure and first principles calculations, The 28th International Conference on Atomic Collisions in Solids &10th International symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2019), 2018.07.
7. AKM S. I. BHUIAN, T. YAMAMOTO, K. YASUDA, S. MATSUMURA, H. YASUDA AND N. ISHIKAWA, DISLOCATION LOOPS IN YTTRIA STABILIZED ZIRCONIA INDUCED BY ELECTRON IRRADIATION: ROLE OF ELECTRON ENERGY AND IRRADIATION TEMPERATURE, Joint ICTP‐IAEA Workshop on Fundamentals of Vitrification and Vitreous Materials for Nuclear Waste and Immobilization, 2017.11.
8. K. Yasuda, Atomic Structure of Ion Tracks in Non-Amorphizable Oxides, 2017 EMRS Fall Meeting  Symposium E “Basic research on ionic-covalent materials for nuclear applications“, 2017.09, Oxide ceramics, such as ceria, yttria-stabilized zirconia, magnesiumaluminate spinel, are of importance for nuclear applications because of their superior resistance to amorphization. Radiation damage induced by fission fragments (FFs) is the most crucial issue for fuel and target aterials, in which high-density electronic excitation is induced to form continuous ion tracks. This paper reports the structure of ion tracks in those oxides throurgh a variety of transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) techniques, to discuss the atomic structure of ion tracks and microstructure evolution at high dose. Atomic resolution STEM observations showed that core damage regions of ion tracks for oxides, CeO2, yttria-stabilized ZrO2 and MgAl2O4, maintain their own crystal structure. The atomic density in core region of ion tracks is, however, depressed and oxygen sublattice is preferentially disordered in fluorite oxides (CeO2, yttria-stabilized ZrO2). Modelling of the accumulation of ion tracks against ion fluence succeeded in evaluation of ion tracks size, size of recovery region, and track formation efficiency. Those values were discussed as a function of electronic stopping power among the oxides. References [1] S. Takaki et al., Nucl. Instrum. Meth. B, 326 (2014) 140. [2] K. Yasuda et al., Int. J. Mater. Res., 102 (2011) 9. [3] K. Yasuda et al., Nucl. Instrum. Meth. B, 314 (2013) 185. [4] S. Takaki et al. Prog. Nucl. Energy 92 (2016) 306. [5] AKM S.I. Bhuian et al. Trans Mat. Res. Soc.-J. 41 (2016)
319..
9. Syo Matsumura, Kazuhiro Yasuda, AKM Saifu Islam Bhutan, Seiya Takaki, High Voltage Electron Microscope Study of Lattice Defect Formation in Fluorite-type Oxide, International Conference on Materials and Systems for Sustainability, ICMaSS2017, 2017.09.
10. S. Yoshioka, K. Tsuruta, T. Yamamoto, S. Matsumura, K. Yasuda, N. Ishikawa, and E. Kobayashi , Small Angle X-ray Scattering and X-ray Absorption Spectroscopy Investigations of Ion Tracks in MgAl2O4, International Conference on Radiation Effect in Insulators (REI 2017), 2017.07.
11. T. Nagaishi, S. Takaki, K. Yasuda, S. Yoshioka, S. Matsumura, N. Ishikawa, Atomic Structure and Accumulation Process of Nuclear Fuel Simulation Matererial
by Advanced Electron Microscopy
, 九州大学エネルギーウィーク2017, 2017.01.
12. AKM S.I. Bhuian, K. Kuwahara, T. Yamamoto, K. Yasuda, S. Matsumura, H. Yasuda, N. Ishikawa, Dislocation Loops in Yttria Satabilized Zirconia: Role of e- and/or Ion Energy and Irradiation Temperatures, 「東海・重イオン科学シンポジウム ―タンデム加速器成果報告会―」, 2017.01.
13. K. Tsuruta, S. Takaki, S. Yoshioka, K. Yasuda, S. Matsumura, N. Ishikawa, Structure Investigations for Ion Tracks in MgAl2O4 by SAXS, 「東海・重イオン科学シンポジウム ―タンデム加速器成果報告会―」, 2017.01.
14. T. Nagaishi, S. Takaki, K. Yasuda, S. Yoshioka, S. Matsumura, N. Ishikawa, Structure and Accumulation of Ion Tracks in Ceria, 「東海・重イオン科学シンポジウム ―タンデム加速器成果報告会―」, 2017.01.
15. S. Yoshioka, K. Tsuruta, K. Yasuda, S. Matsumura, T. Horide, N. Ishikawa, Small Angle X-ray Scattering Investigations of Defect Structure in Ceria Irradiated with Swift Heavy Ions, NuMat2016: The Nuclear Materials Conference, 2016.11.
16. S. Yoshioka, M. Ishida, Kazuhiro Yasuda, Syo Matsumura, S. Kimura, Y. Takeuchi, Y. Niwa, M. Kimura, Multi-scale Structure Investigations of Mg-Zn-Gd alloys by XAFS-CT, The 3rd Int'l. Symp. on Long-Period Stacking Ordered Structure and Its Related Materials (LPSO2016), 2016.12.
17. AKM S.I. Bhuian, T. Yamamoto, K. Kuwahara, K. Yasuda, S. Matsumura, H. Yasuda, Temperature and Electron Energy Dependent Evolution of Dislocation Loops in Yttria Stabilized, MRS 2016 Spring Meeting and Exhibit, 2016.03.
18. AKM S.I. Bhuian, T. Yamamoto, K. Kuwahara, K. Yasuda, S. Matsumura, H. Yasuda, Study on the evolution of dislocation loops in yttria stabilized cubic zirconia , 第25回日本MRS年次大会, 2015.12.
19. K. Yasuda, Structure of Defects and Microstructure Evolution in Oxide Ceramics - Role of Electronic Excitation and Selective Displacement Damage, 2nd MINOS workshop, 2015.11.
20. S. Matsumura, S. Takaki, AKM S.I. Bhuian, K. Yasuda, H. Yasuda, Transmission Electron Microscopy Study of Radiation-Induced Defects in Fluorite-Type Oxides, Twelfth International Topical Meeting on Nuclear Applications of Accelerators, 2015.11.
21. K. Yasuda, T. Nagaishi, S. Takaki, S. Yoshioka, S. Matsumura, N. Ishikawa, Structure and accumulation of ion tracks in ceria irradiated with 100 MeV Kr ions, 18th international Conference on Rediation Effects in Insulators(REI-18), 2015.10.
22. S. Yoshioka, T. Yamamoto, K. Yasuda, S. Matsumura, X-ray Absorption Fine Structure Investigation of Long Period Stacking Ordered Structure Formation in Mg-Zn-Gd Alloys, PTM2015(Solid-Solid Phase Transformations, 2015.06.
23. AKM S.I. Bhuian, T. Yamamoto, K. Kuwahara, K. Yasuda, S. Matsumura, H. Yasuda, Observation of the evolution of dislocation loops in Yttria stabilized Zirconia under high energy
electron irradiation, 平成27年度日本金属学会鉄鋼協会合同学術講演会, 2015.06.
24. K. Yasuda, Transmission electron microscopy study of radiation-induced defects
in fluorite-type oxides, 2015.05.
25. K. Yasuda, S. Takaki, T. Yamamoto, S. Matsumura, N. Ishikawa, Transmission Electron Microscopy Study on Ion Tracks in Ceria, Swift Heavy Ions in Matter (SHIM2015), 2015.05.
26. S. Yoshioka, M. Ishida, T. Yamamoto, K. Yasuda, S. Matsumura, S. Kimura, Local structure investigation of Mg‐Zn‐Gd alloys with long period stacking ordered structure, 16th International Conference on X-ray Absorption Fine Structure, 2015.08.
27. kazuhiro Yasuda, S.Takaki, T. Yamamoto, Syo Matsumura, N.Ishikawa, Atomic Structure of Ion Tracks in Fluorite Structure Oxide, 2014 MRS Fall Meeting & Exhibit, 2014.11.
28. S.Takaki, kazuhiro Yasuda, T. Yamamoto, Syo Matsumura, N.Ishikawa, Atomic-Resolution HAADF/ABF-STEM Observation of Radiation-Induced Defects in Ceria, 18th International Microscopy Congress, 2014.09.
29. Syo Matsumura, N.Sumimoto, T. Yamamoto, kazuhiro Yasuda, T.Niidome, In-situ observation of morphological changes of gold nanorods under
near infrared pulsed laser irradiation, 18th International Microscopy Congress, 2014.09.
30. S.Takaki, T. Yamamoto, kazuhiro Yasuda, Syo Matsumura, N. Ishikawa, Atomic Scale Study on Ion Tracks in Ceria Irradiated with 200 MeV Xe Ions, International Union of Materials Research Societies, 15 th International Conference in Asia (IUMRS-ICA 2014), 2014.08.
31. Syo Matsumura, N.Sumimoto, T. Yamamoto, kazuhiro Yasuda, T.Niidome, In-Situ High Resolution Electron Microscope Observation of Gold Nanorods under Irradiation with Near Infrared Pulsed Laser Light, International Union of Materials Research Societies, 15 th International Conference in Asia (IUMRS-ICA 2014), 2014.08.
32. kazuhiro Yasuda, S.Takaki, T. Yamamoto, Syo Matsumura, N. Ishikawa, Structure and Accumulation of Ion Tracks in Oxide Ceramics, International Union of Materials Research Societies, 15 th International Conference in Asia (IUMRS-ICA 2014), 2014.08.
33. Satoru Yoshioka, Y.Kobayashi, kazuhiro Yasuda, Syo Matsumura, Local Structure Analysis of LPSO by XAFS, LPSO2014, International Symposium on Long-Period Stacking Ordered Structure and Its Related Materials 2014, 2014.10.
34. kazuhiro Yasuda, S.Takaki, T. Yamamoto, Syo Matsumura, N. Ishikawa, Atomic structure of ion tracks in oxide ceramics, ICACS 26 (the International Conference on Atomic Collisions in Solids), 2014.07.
35. kazuhiro Yasuda, S.Takaki, T. Yamamoto, Syo Matsumura, N. Ishikawa, Atomic Structure of Ion Tracks in Fluorite Oxide, 2014 MRS-Spring Meeting, 2014.04.
36. kazuhiro Yasuda, T. Yamamoto, S. Takaki, Syo Matsumura, N. Ishikawa, Atomic Structure of Ion Tracks and Microstructure Evolution in Oxide Ceramics Irradiated with Swift Heavy Ions, Eleventh International Topical Meeting on Nuclear Applications of Accelerators(AccApp'13), 2013.08.
37. kazuhiro Yasuda, S. Takaki, T. Yamamoto, K. Kuwahara, Syo Matsumura, Nucleation-and-growth of Anomalous Dislocation Loops in Fluorite-type Oxides Formed under Electron Irradiation, The Third Workshop On TEM With In Situ Irradiation (WOTWISI-3), 2013.07.
38. S. Takaki, kazuhiro Yasuda, T. Yamamoto, Syo Matsumura, N. Ishikawa, ATOMIC STRUCTURE OF ION TRACKS IN CERIA, 17th International Conference on Radiation Effects in Insulators, 2013.07.
39. Seiya Takaki, Tomokazu Yamamoto, Masanori Kutsuwada, kazuhiro Yasuda, Syo Matsumura, Atomistic observation of electron irradiation-induced defects in CeO2, 2012 MRS Fall Meeting, 2012.11.
40. kazuhiro Yasuda, Tomokazu Yamamoto, Syo Matsumura, Norito Ishikasa, Microstructure Evolution in MgAl2O4 Irradiated with Swift Heavy Ions, International Conference on Swift Heavy Ions in Materials Engineering and Characterization (SHIMEC2012), 2012.10.
41. Tomokazu Yamamoto, kazuhiro Yasuda, Syo Matsumura, Norito Ishikasa, TEM analysis of ion tracks in MgAl2O4, 8th International Symposium on Swift Heavy Ions in Matter, 2012.10.
42. kazuhiro Yasuda, Motoki Etoh, Keiichi Sawada, Tomokazu Yamamoto, Syo Matsumura, Norito Ishikawa, Defect formation and accumulation in CeO2 irradiated with swift heavy ions, 8th International Symposium on Swift Heavy Ions in Matter, 2012.10.
43. kazuhiro Yasuda, "Production and Stability of Radiation-induced Defects in Oxide Ceramics" and "Introduction of HVEM laboratory of Kyushu University, Invited Seminar, 2012.09.
44. Microstructural evolution of zircaloy under hydrogen ion irrdaiation and post-irradiation annealing.
45. TEM investigation of discordering process in NiMo4 irradiated with electrons and/or ions.
46. Formation process of radiation-induced defects irradiated simultaneously with ions and electrons
K.Yasuda C. Kinoshita.
47. Role of irradiation spectrum on the radiation damage process of in MgO・nAl2O4.
48. Nanoindentation study of ion-irradiated MgO・nAl2O4.