Plasma Wall Interaction in the Presence of Beryllium

• Project/Area Number: 25709086
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• 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(研究院), 准教授 (80379693)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000); Fiscal Year 2013: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
• Keywords: プラズマ表面相互作用 / ベリリウム / 微細組織 / 電子顕微鏡 / 水素保持特性 / 照射損傷 / プラズマ・壁相互作用

Outline of Final Research Achievements

While beryllium will be used as armor materials for ITER plasma-facing components, available information about beryllium effects on surface properties is still limited due to the precautions concerning beryllium handling. In this study, safety operating system for handling the beryllium-containing samples were constructed at first. Then, the microstructure and the deuterium retention property in beryllium and its deposition layers were systematically investigated. As a consequence, it is considered that Be seeding to plasma has a more dominant influence on microstructures and D retention in plasma-exposed W than He seeding.

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] カリフォルニア大学サンディエゴ校(米国)
• [Journal Article] Reactivity and deuterium retention properties of titanium-beryllium intermetallic compounds (2017)
  • Author(s): Jae-Hwan Kim, Mitsutaka Miyamoto, Yuta Hujii, Masaru Nakamichi
  • Journal Title: Intermetallics Volume: 82 Pages: 20-25
  • DOI: 10.1016/j.intermet.2016.11.005
  • Peer Reviewed / Open Access
• [Journal Article] Microstructure and deuterium retention of beryllium co-deposition layer formed under high density plasma exposure (2017)
  • Author(s): M. Miyamoto, D. Nishijima, M.J. Baldwin, R.P. Doerner, A. Sagara
  • Journal Title: Nuclear Materials and Energy Volume: 印刷中 Pages: 633-637
  • DOI: 10.1016/j.nme.2017.02.009
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Hydrogen retention behavior of beryllides as advanced neutron multipliers (2016)
  • Author(s): Y. Fujii, M. Miyamoto, Jae-Hwan Kim, M. Nakamichi, N. Murayoshi, H. Iwakiri
  • Journal Title: Nuclear Materials and Energy Volume: 9 Pages: 233-236
  • DOI: 10.1016/j.nme.2016.03.001
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Fabrication and characterization of advanced neutron multipliers for DEMO blanket (2016)
  • Author(s): M. Nakamichi, J.-H. Kim and M. Miyamoto
  • Journal Title: Nuclear Materials and Energy Volume: 9 Pages: 55-58
  • DOI: 10.1016/j.nme.2016.07.006
  • Peer Reviewed / Open Access
• [Journal Article] Effect of temperature on microstructures and retention properties in tungsten exposed to D + He + Be mixture plasmas in PISCES (2015)
  • Author(s): Iijima, N., Miyamoto, M., Nishijima, D., Baldwin, M.J., Doerner, R.P., Ueda, Y., Sagara, A., Hoschen, T.
  • Journal Title: Journal of Nuclear Materials Volume: 463 Pages: 979-982
  • DOI: 10.1016/j.jnucmat.2014.10.099
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Crystal orientation dependence of surface modification in molybdenum mirror irradiated with helium ions (2014)
  • Author(s): M. Miyamoto, H. Takaoka, K. Ono, S. Morito, N. Yoshida, H. Watanabe, A. Sagara
  • Journal Title: Journal of Nuclear Materials Volume: 452 Issue: 1-3 Pages: 297-300
  • DOI: 10.1016/j.jnucmat.2014.06.030
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Release of deuterium from irradiation damage in Fe-9Cr-2W ferritic alloy irradiated with deuterium ions (2014)
  • Author(s): K. Ono, M. Miyamoto, F. Kudo
  • Journal Title: Journal of Nuclear Materials Volume: 452 Issue: 1-3 Pages: 46-50
  • DOI: 10.1016/j.jnucmat.2014.04.043
  • Peer Reviewed
• [Journal Article] Systematic investigation of the formation behavior of helium bubbles in tungsten (2014)
  • Author(s): M. Miyamoto, S. Mikami, H. Nagashima, N. Iijima, D. Nishijima, R.P. Doerner, N. Yoshida, H. Watanabe, Y. Ueda, A. Sagara
  • Journal Title: Journal of Nuclear Materials Volume: - Pages: 333-336
  • DOI: 10.1016/j.jnucmat.2014.10.098
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] In situ transmission electron microscope observation of the formation of fuzzy structures on tungsten (2014)
  • Author(s): M. Miyamoto, T. Watanabe, H. Nagashima, D. Nishijima, R.P. Doerner, S.I. Krasheninnikov, A. Sagara and N. Yoshida
  • Journal Title: Physica Scripta Volume: T159 Pages: 014028-014028
  • DOI: 10.1088/0031-8949/2014/t159/014028
  • Peer Reviewed
• [Journal Article] D-He-Be混合プラズマ環境下でのタングステンの微細組織と重水素保持特性 (2013)
  • Author(s): 宮本光貴，西島大輔，M.J. Baldwin，R.P. Doerner，上田良夫，栗下裕明，吉田直亮，相良明男
  • Journal Title: プラズマ･核融合学会誌 Volume: 89 Pages: 335-340
  • NAID: 110009612747
  • Peer Reviewed
• [Presentation] 高密度プラズマ照射によるベリリウムの表面特性変化 (2016)
  • Author(s): 宮本光貴, 西島大輔, M.J. Baldwin, R.P. Doerner, 増崎 貴
  • Organizer: 第33回 プラズマ・核融合学会 年会
  • Place of Presentation: 仙台（東北大学青葉山キャンパス）
  • Year and Date: 2016-11-29
  • Int'l Joint Research
• [Presentation] Microstructure and deuterium retention of beryllium co-deposition layer formed under high density plasma exposure (2016)
  • Author(s): M. Miyamoto, D. Nishijima, M.J. Baldwin, R.P. Doerner, A. Sagara
  • Organizer: 22nd International Conference on Plasma Surface Interactions in Controlled Fusion Devices
  • Place of Presentation: Rome, Italy
  • Year and Date: 2016-05-30
  • Int'l Joint Research
• [Presentation] 先進中性子増倍材料としてのベリリウム金属間化合物における水素保持挙動 (2016)
  • Author(s): 藤井悠太，宮本光貴，金 宰煥，中道 勝，岩切宏友
  • Organizer: 日本原子力学会2016年春の年会
  • Place of Presentation: 仙台（東北大学川内キャンパス）
  • Year and Date: 2016-03-26
• [Presentation] 高密度プラズマ照射下で形成したBe堆積層の微細組織と その水素保持特性への影響 (2015)
  • Author(s): 宮本光貴, 三上 聡, 西島大輔, M.J. Baldwin, R.P. Doerner, 上田良夫, 相良明男
  • Organizer: 第32回プラズマ・核融合学会 年会
  • Place of Presentation: 名古屋（名古屋大学東山キャンパス・豊田講堂）
  • Year and Date: 2015-11-24
• [Presentation] いくつかの金属材料におけるナノ構造形成過程のその場観察 (2015)
  • Author(s): 永島 光, 宮本光貴, 時谷政行, 相良明男, 吉田直亮
  • Organizer: 第32回プラズマ・核融合学会 年会
  • Place of Presentation: 名古屋（名古屋大学東山キャンパス・豊田講堂）
  • Year and Date: 2015-11-24
• [Presentation] Hydrogen retention behavior of beryllides as advanced neutron multipliers (2015)
  • Author(s): Y. Fujii, M. Miyamoto, Jae-Hwan Kim, M. Nakamichi, N. Murayoshi, H. Iwakiri
  • Organizer: 17th International Conference on Fusion Reactor Materials
  • Place of Presentation: Aachen, Germany
  • Year and Date: 2015-10-12
  • Int'l Joint Research
• [Presentation] タングステン中のヘリウムバブル形成挙動の系統的観察 (2014)
  • Author(s): 三上聡, 飯島信行, 原田遼太, 宮本光貴, 西島大輔, R.P. Doerner, 吉田直亮, 渡辺英雄
  • Organizer: プラズマ・核融合学会第31回年会
  • Place of Presentation: （新潟）朱鷺メッセ
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] 先進中性子増倍材料としてのベリライド微小球の重水素水素保持挙動 (2014)
  • Author(s): 藤井悠太, 竹下隼人，宮本光貴, 中道勝, 岩切宏友
  • Organizer: プラズマ・核融合学会第31回年会
  • Place of Presentation: （新潟）朱鷺メッセ
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] In-situ TEM observation of the microstructural damage in tungsten under He ion irradiation (2014)
  • Author(s): M. Miyamoto
  • Organizer: 12th Japan-China Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering
  • Place of Presentation: （静岡）あざれあ
  • Year and Date: 2014-09-17 – 2014-09-20
• [Presentation] Systematic investigation of the formation behavior of helium bubbles in tungsten (2014)
  • Author(s): M. Miyamoto, S. Mikami, H. Nagashima, D. Nishijima, R.P. Doerner, N. Yoshida, H. Watanabe, Y. Ueda, A. Sagara
  • Organizer: 21st International Conference on Plasma Surface Interactions
  • Place of Presentation: （金沢）石川県立音楽堂
  • Year and Date: 2014-05-26 – 2014-05-30
• [Presentation] Effect of temperature on microstructures and retention properties in tungsten exposed to D + He + Be mixture plasmas in PISCES (2014)
  • Author(s): N. IIjima, M. Miyamoto, D. Nishijima, M.J. Baldwin, R.P. Doerner, Y. Ueda, A. Sagara, T. Höschene
  • Organizer: 21st International Conference on Plasma Surface Interactions
  • Place of Presentation: （金沢）石川県立音楽堂
  • Year and Date: 2014-05-26 – 2014-05-30
• [Presentation] タングステンナノ構造形成過程の電子顕微鏡その場観察 (2014)
  • Author(s): 宮本光貴
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: (神奈川)東海大学 湘南キャンパス
• [Presentation] In-situ TEM observation of the formation of fuzzy structures on tungsten (2013)
  • Author(s): M. Miyamoto, T. Watanabe, H. Nagashima, D. Nishijima, R.P. Doerner, S.I. Krasheninnikov, A. Sagara and N. Yoshida
  • Organizer: 14th International Conference on Plasma-Facing Materials and Components for Fusion Applications
  • Place of Presentation: Juelich, Germany
• [Presentation] D-He-Be混合プラズマを照射したタングステンの 表面特性に与える照射温度の影響 (2013)
  • Author(s): 飯島信行，宮本光貴，西島大輔，Matthew Baldwin，Russ Doerner，上田良夫，相良明男
  • Organizer: プラズマ・核融合学会 第30回年会
  • Place of Presentation: (東京)東京工業大学大岡山キャンパス
• [Presentation] タングステンナノ構造形成過程のTEMその場観察 (2013)
  • Author(s): 永島 光, 宮本 光貴, 相良 明男, 吉田 直亮, Sergei Krasheninnikov, Russ Doerner
  • Organizer: プラズマ・核融合学会 第30回年会
  • Place of Presentation: (東京)東京工業大学大岡山キャンパス
• [Presentation] Crystal orientation dependence of surface modification in molybdenum mirror irradiated with helium ions (2013)
  • Author(s): M. Miyamoto, H. Takaoka, K. Ono, S. Morito, N. Yoshida, H. Watanabe, A Sagara
  • Organizer: 16th International Conference on Fusion Reactor Materials
  • Place of Presentation: Beijing, China