A proposal of in-situ diagnostics methods for PFMs in fusion reactors

• Project/Area Number: 22760657
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: Shimane University
• Principal Investigator: MIYAMOTO Mitsutaka 島根大学, 総合理工学研究科, 助教 (80379693)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: プラズマ / 壁相互作用 / プラズマ表面相互作用 / 光反射率 / 水素リテンション / 昇温脱離ガス分析 / 分光エリプソメトリー / 微細組織 / 照射損傷 / ヘリウム / タングステン / 照射下その場測定

Research Abstract

Deuterium retention properties and microstructural changes in plasma facing materials (PFMs) are systematically investigated due to mixed species D and He ions irradiation. In addition, the correlation between these surface characteristic changes and optical reflectivity is evaluated. The optical reflectivity measurement is proposed as a convenient in-situ diagnostic method to detect a real-timePFMs conditions.

Research Products

• [Journal Article] Influence of Be seeding on microstructures of tungsten exposed to D-He mixture plasmas in PISCES and its impacts on retention properties (2013)
  • Author(s): M. Miyamoto
  • Journal Title: Journal of Nuclear Materials Volume: in press Pages: S216-S219
  • DOI: 10.1016/j.jnucmat.2013.01.030
  • Peer Reviewed
• [Journal Article] Microstructures and Deuterium-Retention Behavior of Tungsten Exposed to D+(He and/or Be) Mixture Plasmas (2013)
  • Author(s): Mitsutaka Miyamoto, Daisuke Nishijima, Matthew J. Baldwin, Russell P. Doerner, Yoshio Ueda, Akio Sagara, Hiroaki Kurishita
  • Journal Title: Materials Transactions Volume: 54 Pages: 420-424
  • NAID: 10031162803
  • Peer Reviewed
• [Journal Article] Helium irradiation effects on deuterium retention in tungsten (2013)
  • Author(s): Y. Sakoi
  • Journal Title: Journal of Nuclear Materials Volume: in press Issue: 1-3 Pages: S715-S718
  • DOI: 10.1016/j.jnucmat.2012.10.003
  • Peer Reviewed
• [Journal Article] Enhancement of hydrogen isotope retention in tungsten exposed to LHD plasmas (2013)
  • Author(s): Yasuhisa Oya
  • Journal Title: Journal of Nuclear Materials Volume: in press Pages: S1055-S1058
  • DOI: 10.1016/j.jnucmat.2013.01.231
  • Peer Reviewed
• [Journal Article] Response of fuzzy tungsten surfaces to pulsed plasma bombardment (2013)
  • Author(s): 西島大輔
  • Journal Title: Journal of Nuclear Materials Volume: 434 Issue: 1-3 Pages: 230-234
  • DOI: 10.1016/j.jnucmat.2012.10.042
  • Peer Reviewed
• [Journal Article] Microscopic damage of tungsten exposed to deuterium-helium mixture plasma in PISCES and its impacts on retention property (2011)
  • Author(s): M. Miyamoto, D. Nishijima, M.J. Baldwin, R.P. Doerner, Y. Ueda, K. Yasunaga, N. Yoshida, K. Ono
  • Journal Title: Journal of Nuclear Materials Volume: 415 Issue: 1 Pages: S657-S660
  • DOI: 10.1016/j.jnucmat.2011.01.008
  • Peer Reviewed
• [Journal Article] Evaluation of charge-exchange neutral incident parameters onto plasma-facingmaterials in LHD with material probe method (2011)
  • Author(s): M. Miyamoto, M. Tokitani, N. Ashikawa, M. Kobayashi, M. Shoji, S. Masuzaki, N. Yoshida, D. Reiter, K. Ono and the LHD experimental group
  • Journal Title: Journal of Nuclear Materials417 Volume: 417 Issue: 1-3 Pages: 673-677
  • DOI: 10.1016/j.jnucmat.2010.12.186
  • Peer Reviewed
• [Journal Article] Degradation of optical properties in Mo mirrors under irradiation with low energy helium and deuterium ions (2011)
  • Author(s): T. Nakano, M. Miyamoto, S. Hasuike, K. Ono, N. Yoshida
  • Journal Title: Journal of Nuclear Materials Volume: 417 Issue: 1-3 Pages: 834-837
  • DOI: 10.1016/j.jnucmat.2010.12.143
  • Peer Reviewed
• [Journal Article] Temperature dependence of the reflectivity degradation in single and polycrystalline Mo mirrors under the irradiation with low-energy helium ions (2011)
  • Author(s): 小野興太郎
  • Journal Title: Journal of Nuclear Materials Volume: 415 Issue: 1 Pages: S1214-S1217
  • DOI: 10.1016/j.jnucmat.2010.11.003
  • Peer Reviewed
• [Journal Article] Effects of tungsten on thermal desorption of helium from Fe-9Cr-2W ferritic alloy irradiated with low energy helium ions (2011)
  • Author(s): 小野興太郎
  • Journal Title: Journal of Nuclear Materials Volume: 417 Issue: 1-3 Pages: 1026-1029
  • DOI: 10.1016/j.jnucmat.2011.01.090
  • Peer Reviewed
• [Presentation] 高密度直線型プラズマ発生装置 PISCES において D-He-Be 混合プラズマ照射した W の微細組織と重水素リテンション特性 (2012)
  • Author(s): 宮本 光貴
  • Organizer: プラズマ核融合学会第29回年会(招待講演)
  • Place of Presentation: クローバープラザ(福岡)
  • Year and Date: 2012-11-29
• [Presentation] Influence of Be seeding on microstructures of tungsten exposed to D-He mixture plasmas in PISCES and its impacts on retention properties (2012)
  • Author(s): 宮本光貴
  • Organizer: 20th International Conference on Plasma Surface Interaction
  • Place of Presentation: アーヘン,ドイツ
  • Year and Date: 2012-05-22
• [Presentation] Influence of Be seeding on microstructures of tungsten exposed to D–He mixture plasmas in PISCES and its impacts on retention properties (2012)
  • Author(s): 宮本 光貴
  • Organizer: 20th International Conference on Plasma Surface Interactions
  • Place of Presentation: ドイツ，アーヘン
• [Presentation] 高密度直線型プラズマ発生装置PISCESにおいてD-He-Be混合プラ ズマ照射したWの微細組織と重水素リテンション特性 (2012)
  • Author(s): 宮本 光貴
  • Organizer: プラズマ・核融合学会 第29回年会
  • Place of Presentation: クローバープラザ（福岡県春日市）
  • Invited
• [Presentation] 重水素・ヘリウム同時照射したタングステンにおける重水素保持特性 (2012)
  • Author(s): 郷原 卓
  • Organizer: プラズマ・核融合学会 第29回年会
  • Place of Presentation: クローバープラザ（福岡県春日市）
• [Presentation] LHD実機プラズマに曝した対向材料の光学特性評価 (2012)
  • Author(s): 山本将寛
  • Organizer: プラズマ・核融合学会 第29回年会
  • Place of Presentation: クローバープラザ（福岡県春日市）
• [Presentation] Degradation of Optical Properties in Metal Mirrors under Irradiation and Its Applicability Evaluation to In-situ Diagnostics of Microstructure Change in Plasma Facing Materials (2011)
  • Author(s): 宮本光貴
  • Organizer: 15th International Conference on Fusion Reactor Materials
  • Place of Presentation: チャールストン,アメリカ
  • Year and Date: 2011-12-18
• [Presentation] ヘリウムイオン照射したミラー材料における表面損傷の結晶方位依存 (2011)
  • Author(s): 宮本 光貴
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 石川県立音楽堂(金沢
  • Year and Date: 2011-11-24
• [Presentation] ヘリウムイオン照射したミラー材料における表面損傷の結晶方位依存 (2011)
  • Author(s): 宮本光貴
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 金沢市,石川県立音楽堂
  • Year and Date: 2011-11-24
• [Presentation] Degradation of Optical Properties in Metal Mirrors under Irradiation and Its Applicability Evaluation to In-situ Diagnostics of Microstructure Change in Plasma Facing Materials (2011)
  • Author(s): 宮本光貴
  • Organizer: 15th International Conference on Fusion Reactor Materials
  • Place of Presentation: アメリカ,チャールストン
  • Year and Date: 2011-10-18
• [Presentation] D,He複合イオン照射したタングステンにおけるガス吸蔵特性 (2010)
  • Author(s): 迫井佑己
  • Organizer: プラズマ核融合学会第27回年会
  • Place of Presentation: 札幌市
  • Year and Date: 2010-11-30
• [Presentation] D, He 複合イオン照射したタングステンにおけるガス吸蔵特性 (2010)
  • Author(s): 迫井佑己
  • Organizer: ラズマ核融合学会第27回年会
  • Place of Presentation: 北海道大学(札幌)
  • Year and Date: 2010-11-24
• [Presentation] Microscopic Damage of Tungsten Exposed to Duetrium-Helium Mixture Plasma in PISCES and Its Impacts on Retention Property (2010)
  • Author(s): 宮本光貴
  • Organizer: 19th International Conference on Plasma Surface Interactions in Controlled Fusion Devices
  • Place of Presentation: アメリカ,サンディエゴ
  • Year and Date: 2010-05-27