Properties of Beryllium for Plasma Facing Material in Fusion Reactor

• Project/Area Number: 17H03511
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: Shimane University
• Principal Investigator: Miyamoto Mitsutaka 島根大学, 学術研究院理工学系, 准教授 (80379693)
• Co-Investigator(Kenkyū-buntansha): 金 宰煥 国立研究開発法人量子科学技術研究開発機構, 六ヶ所核融合研究所 ブランケット研究開発部, 主任研究員(定常) (80613611) ; 時谷 政行 核融合科学研究所, ヘリカル研究部, 准教授 (30455208)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000); Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2017: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
• Keywords: プラズマ・壁相互作用 / 照射損傷 / ベリリウム / 電子顕微鏡

Outline of Final Research Achievements

While beryllium will be used as armor materials for ITER plasma-facing components, available information about beryllium effects on plasma surface interactions is still limited due to the precautions concerning beryllium handling. In this study, we have developed the past efforts of Grant-in-Aid for Young Scientists (A), which cultivated the safety operation of the beryllium handling and revealed the surface properties of the beryllium deposited films, and investigated the surface properties of the bulk beryllium as a plasma-facing material in fusion reactors. Especially, the microstructure and the deuterium retention property in beryllium had been systematically investigated.

Academic Significance and Societal Importance of the Research Achievements

核融合プラズマ対向材料としてのベリリウムに関連した系統的な研究は，世界的に見てもほとんど行われておらず，特に，照射材の微細組織観察の例は少なく，国内で十分な加工がおこなえる施設は量子科学技術研究開発機構の青森県六ヶ所サイトのみであった．本研究は，十分な安全対策のもと，ベリリウム試料の薄膜化加工を行い，材料の水素吸蔵メカニズムをナノレベルから解明することを目指した他に類を見ない研究を行った．現在建設中のITER ではベリリウムが使用される予定であるが，本研究を通して得られた成果から，材料の劣化程度や寿命の予測，さらに最適化された使用条件の提案に貢献できると考えられる．

Research Products

• [Int'l Joint Research] カリフォルニア大学サンディエ ゴ校(米国)
• [Int'l Joint Research] 欧州原子力共同体(英国)
• [Int'l Joint Research] カリフォルニア大学サンディエ ゴ校(米国)
• [Int'l Joint Research] カリフォルニア大学サンディエゴ校(米国)
• [Journal Article] Surface morphology of the bulk tungsten divertor tiles from JET ITER-like wall (2020)
  • Author(s): Tokitani M、Miyamoto M、Masuzaki S、Hatano Y、Lee S E、Oya Y、Otsuka T、Oyaidzu M、Kurotaki H、Suzuki T、Hamaguchi D、Hayashi T、Asakura N、Widdowson A、Jachmich S、Rubel M、JET Contributors
  • Journal Title: Physica Scripta Volume: T171 Pages: 014010-014010
  • DOI: 10.1088/1402-4896/ab3d09
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Compatibility of advanced tritium breeders and neutron multipliers (2020)
  • Author(s): Jae-Hwan Kim, Masaru Nakamichi
  • Journal Title: Fusion Engineering and Design Volume: 156 Pages: 111581-111581
  • DOI: 10.1016/j.fusengdes.2020.111581
  • Peer Reviewed
• [Journal Article] Influence of heavier impurity deposition on surface morphology development and sputtering behavior explored in multiple linear plasma devices (2019)
  • Author(s): Nishijima D.、Kreter A.、Baldwin M.J.、Borodin D.、Eksaeva A.、Hwangbo D.、Kajita S.、Miyamoto M.、Ohno N.、Patino M.、Pospieszczyk A.、Rasinski M.、Schlummer T.、Terra A.、Doerner R.P.
  • Journal Title: Nuclear Materials and Energy Volume: 18 Pages: 67-71
  • DOI: 10.1016/j.nme.2018.12.008
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dynamic behavior of helium bubbles at high temperature in Si studied by in situ TEM, STEM-EELS, and TDS (2019)
  • Author(s): Ono K.、Miyamoto M.、Kurata H.、Haruta M.、Yatomi A.
  • Journal Title: Journal of Applied Physics Volume: 126 Issue: 13 Pages: 135104-135104
  • DOI: 10.1063/1.5118684
  • Peer Reviewed
• [Journal Article] Particle balance investigation with the combination of hydrogen barrier model and rate equations of hydrogen state in long duration discharges on all-metal plasma facing wall QUEST (2019)
  • Author(s): K.Hanada,N.Yoshida,M.Hasegawa,H.Idei,Y.Nagashima,K.Nakamura,T.Onchi,O.Watanabe,H.Watanabe,K.Tokunaga,A.Higashijima,S.Kawasaki,T.Nagata,S.Shimagukuro,A.Hatayama,K.Okamoto,I.Takagi,T.Hirata,T.Shikama,S.Murakami,H.Long,Z.X.Wang,Y.Oya,S.Kojima,K.Gaku,M.Oya,M.Miyamoto,Y.Oya,T.Takase,X.Gao,H.Liu,J.Qian,R.aman,M.Ono
  • Journal Title: Nuclear Fusion Volume: 投稿中 Issue: 7 Pages: 076007-076007
  • DOI: 10.1088/1741-4326/ab1858
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effect of grain size on the sinterability and reactivity of vanadium-beryllium intermetallic compounds (2019)
  • Author(s): Kim Jae-Hwan、Nakamichi Masaru
  • Journal Title: Fusion Engineering and Design Volume: 144 Pages: 93-96
  • DOI: 10.1016/j.fusengdes.2019.04.081
• [Journal Article] Characterization of modified Be13Zr beryllide pebbles as advanced neutron multipliers (2019)
  • Author(s): Kim Jae-Hwan、Nakamichi Masaru
  • Journal Title: Fusion Engineering and Design Volume: 146 Pages: 2608-2612
  • DOI: 10.1016/j.fusengdes.2019.04.054
• [Journal Article] Plasma-wall interaction on the divertor tiles of JET ITER-like wall from the viewpoint of micro/nanoscopic observations (2018)
  • Author(s): M. Tokitani , M. Miyamoto, S. Masuzaki, R. Sakamoto, Y. Oya, Y. Hatano, T. Otsuka, M. Oyaidzu, H. Kurotaki, T. Suzuki, D. Hamaguchi, K. Isobe, N. Asakura, A. Widdowson, K. Heinola, M. Rubel, JET Contributors
  • Journal Title: Fusion Engineering and Design Volume: 136 Pages: 199-204
  • DOI: 10.1016/j.fusengdes.2018.01.051
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Thermal stability and evolution of microstructures induced by He irradiation in W-TiC alloys (2018)
  • Author(s): Q. Xu, X.Y. Ding, L.M. Luo, M. Miyamoto, M. Tokitani, J. Zhang, Y.C. Wu
  • Journal Title: Nuclear Materials and Energy Volume: 15 Pages: 76-79
  • DOI: 10.1016/j.nme.2018.02.003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Effect of plasma sintering on densification and oxygen content of beryllium powder (2018)
  • Author(s): Petr Kurinskiy, Jae-Hwan Kim, Masaru Nakamichi
  • Journal Title: Nuclear Materials and Energy Volume: 17 Pages: 206-210
  • DOI: 10.1016/j.nme.2018.11.003
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Deuterium retention and desorption properties of ternary beryllide pebbles as advanced neutron multipliers (2017)
  • Author(s): Jae-Hwan Kim, Mitsutaka Miyamoto, Masaru Nakamichi
  • Journal Title: Fusion Engineering and Design Volume: 125 Pages: 541-544
  • DOI: 10.1016/j.fusengdes.2017.04.037
  • Peer Reviewed / Open Access
• [Journal Article] Laser-induced breakdown spectroscopy thickness measurements of films thinner than ablation rate (2017)
  • Author(s): D.Nishijima, R.P.Doerner, E.M.Hollmann, M.Miyamoto
  • Journal Title: Spectrochimica Acta Part B Volume: 136 Pages: 34-38
  • DOI: 10.1016/j.sab.2017.08.007
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] JET-ILW実験で使用されたWダイバータタイルおよびBeリミタタイルの微細構造 (2019)
  • Author(s): 時谷政行，宮本光貴，増崎 貴，波多野雄治，大矢恭久，大塚哲平，濱口 大，黒滝宏紀，小柳津誠，鈴木卓美，鈴木達也，磯部兼嗣，林 巧，朝倉伸幸，Anna Widdowson，Stefan Jachmich，Marek Rubel
  • Organizer: プラズマ・核融合学会第36回年会
• [Presentation] ベリリウムの水素・ヘリウム保持特性に与える高温照射の影響 (2019)
  • Author(s): 杉本有隆， 原 一智，中道 勝，金 宰煥 ， 宮本光貴
  • Organizer: プラズマ・核融合学会第36回年会
• [Presentation] 水素・ヘリウムを高温照射した先進中性子増倍材料の微細組織と水素保持特性 (2019)
  • Author(s): 竹本健太郎 , 金 宰煥 , 中道 勝 , 宮本光貴
  • Organizer: プラズマ・核融合学会第36回年会
• [Presentation] F82Hにおけるヘリウムバブルの動的挙動 (2019)
  • Author(s): 芦沢京祐，橋口昌治，杉本有隆，渡辺淑之，宮本光貴
  • Organizer: プラズマ・核融合学会第36回年会
• [Presentation] Formation and migration of helium bubbles in Reduced Activation Ferritic/Martensitic Steel F82H (2019)
  • Author(s): Mitsutaka Miyamoto, Masaharu Hashiguchi, Yutaka Sugimoto, Yoshiyuki Watanabe
  • Organizer: 19th International Conference on Fusion Reactor Materials
  • Int'l Joint Research
• [Presentation] Deuterium and helium desorption behavior and microstructure evolution in beryllium during annealing (2019)
  • Author(s): Y. Sugimoto, M. Miyamoto, M. Nakamichi, J. Kim, H. Kurata, M. Haruta
  • Organizer: 19th International Conference on Fusion Reactor Materials
  • Int'l Joint Research
• [Presentation] R&Ds on Vanadium Beryllides as an advanced neutron multipliers for DEMO Fusion applications (2019)
  • Author(s): 金 宰煥, Masaru Nakamichi
  • Organizer: 第14回ベリリウム技術国際ワークショップ
  • Int'l Joint Research
• [Presentation] Compatibility of advanced tritium breeders and neutron multipliers (2019)
  • Author(s): Jaehwan Kim, Masaru Nakamichi
  • Organizer: 14th International Symposium on Fusion Nuclear Technology
  • Int'l Joint Research
• [Presentation] CURRENT STATE AND STABLY SECURING OF BERYLLIUYM RESOURCE FOR FUSION BLANKETS (2019)
  • Author(s): Masaru Nakamichi, Jaehwan Kim
  • Organizer: 19th International Conference on Fusion Reactor Materials
  • Int'l Joint Research / Invited
• [Presentation] Hydrogen isotope retention and release properties of beryllium intermetallic compounds as advanced neutron multipliers for fusion applications (2019)
  • Author(s): Jae-Hwan Kim, Mitsutaka Miyamoto, Masaru Nakamichi
  • Organizer: 12th International Conference on Tritium Science and Technology
  • Int'l Joint Research
• [Presentation] 高密度プラズマ照射したBeタイルの微細組織と水素保持特性 (2018)
  • Author(s): 宮本光貴，西島大輔，M.J. Baldwin，R.P. Doerner
  • Organizer: 第12回核融合エネルギー連合講演会
• [Presentation] 昇温時におけるベリリウム中の重水素及びヘリウムの脱離挙動と微細組織変化 (2018)
  • Author(s): 杉本有隆，宮本光貴，中道 勝，金 宰煥，倉田博基， 治田充貴
  • Organizer: 第12回核融合エネルギー連合講演会
• [Presentation] Deuterium retention properties of beryllium intermetallic compounds (2018)
  • Author(s): Masaru Nakamichi, Mitsutaka Miyamoto, Norihiro Murayoshi, Hirotomo Iwakiri, Jae-Hwan Kim
  • Organizer: The Nuclear Materials Conference 2018
  • Int'l Joint Research
• [Presentation] ベリリウムにおける重水素およびヘリウム放出挙動のその場観察 (2018)
  • Author(s): 杉本有隆，宮本光貴，中道 勝，金 宰煥，倉田博基，治田充貴
  • Organizer: 第35回 プラズマ・核融合学会 年会
• [Presentation] ベリリウムにおける重水素およびヘリウム放出挙動のその場観察 (2018)
  • Author(s): 松田伊久間，杉本有隆，宮本光貴
  • Organizer: 第35回 プラズマ・核融合学会 年会
• [Presentation] Surface property of tungsten exposed to beryllium containing high density plasma in PISCES (2017)
  • Author(s): M. Miyamoto, D. Nishijima, M.J. Baldwin and R.P. Doerner
  • Organizer: 13th International Workshop on Beryllium Technology
  • Int'l Joint Research
• [Presentation] Deuterium and helium retention properties in beryllium irradiated with low energy ions (2017)
  • Author(s): Y. Sugimoto, M. Miyamoto, Jae-Hwan Kim and M. Nakamichi
  • Organizer: 13th International Workshop on Beryllium Technology
  • Int'l Joint Research
• [Presentation] Effects of Helium Irradiation on Hydrogen Retention Behavior in Beryllide Pebbles (2017)
  • Author(s): M. Miyamoto, Y. Fujii, Y. Sugimoto, H. Iwakiri, J. Kim, M. Nakamichi
  • Organizer: 18th International Conference on Fusion Reactor Materials
  • Int'l Joint Research
• [Presentation] 昇温時におけるベリリウム中の重水素及びヘリウムの脱離挙動と微細組織変化 (2017)
  • Author(s): 杉本有隆, 宮本光貴, 中道勝, 金宰煥, 倉田博基, 治田充貴
  • Organizer: Plasma Conference 2017
• [Presentation] ベリライドの水素保持特性に与えるヘリウム照射の影響 (2017)
  • Author(s): 宮本光貴, 藤井悠太, 杉本有隆, 岩切宏友, 金宰煥, 中道勝
  • Organizer: Plasma Conference 2017