Evaluation of the microstructure and retention properties of plasma particles on mix-material deposition layer

• Project/Area Number: 20760580
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: National Institute for Fusion Science
• Principal Investigator: TOKITANI Masayuki National Institute for Fusion Science, ヘリカル研究部, 助教 (30455208)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: プラズマ・壁相互作用 / Mix-material / 再堆積層 / 微細構造観察 / プラズマ粒子 / 電子顕微鏡

Research Abstract

Physical properties of Mix-material deposition layers were analyzed by using transmission electron microscopy. Deposition layers were composed by amorphous like carbon and metal layers. The metal layers mainly including Fe seem to act as the initiator of the exfoliation of the deposition layers. In addition, retention rate of hydrogen isotopes in deposition layer was higher than that of the bulk carbon materials.

Research Products

• [Journal Article] Characterization of surface modifications of plasma-facing components in LHD (2010)
  • Author(s): M.Tokitani, N.Yoshida, M.Miyamoto, T.Hino, Y.Nobuta, S.Masuzaki, N.Ashikawa, A.Sagara, N.Noda, H.Yamada, A.Komori, LHD Experiment Group
  • Journal Title: Fusion Science and Technology Vol.58 Pages: 305-320
  • Peer Reviewed
• [Journal Article] Microscopic deformation of tungsten surfaces by high energy and high flux helium/hydrogen particle bombardment with short pulses (2010)
  • Author(s): M.Tokitani, N.Yoshida, K.Tokunaga, H.Sakakita, S.Kiyama, H.Koguchi, Y.Hirano, S.Masuzaki
  • Journal Title: Plasma and Fusion Research : Regular Articles Volume 5
  • NAID: 130000264067
  • Peer Reviewed
• [Journal Article] Characterization of surface modifications of plasma-facing components in LHD (2010)
  • Author(s): M.Tokitani, et al.
  • Journal Title: Fusion Science and Technology Volume: Vol.58 No.1 Pages: 305-320
  • Peer Reviewed
• [Journal Article] Micro/nano scale modification of plasma facing components in LHD and its impact on the metal dust generations (2009)
  • Author(s): M.Tokitani, Y.Ohtawa, N.Yoshida, K.Tokunaga, T.Fujiwara, N.Ashikawa, S.Masuzaki, H.Yamada, A.Sagara, N.Noda, A.Komori, LHD experimental group
  • Journal Title: Journal of Nuclear Materials 390-391 Pages: 156-159
  • Peer Reviewed
• [Journal Article] Micro/nano scale modification of plasma facing components in LHD and its impact on the metal dust generations (2009)
  • Author(s): M.Tokitani et al.
  • Journal Title: Journal of Nuclear Materials 390-391 Pages: 156-159
  • Peer Reviewed
• [Journal Article] Microscopic deformation of tungsten surfaces by high energy and high flux helium / hydrogen particle bombardment with short pulses (2009)
  • Author(s): M. Tokitani
  • Journal Title: Proceedings of 18th International Told Conference NIFS-PROC-78 Pages: 359-362
  • NAID: 130000264067
• [Presentation] 第一壁連続トロイダルアレイ試料を用いたLHD対向材料の損耗・再堆積分布の評価 (2010)
  • Author(s): 時谷政行
  • Organizer: プラズマ・核融合学会第27回年会
  • Place of Presentation: 北海道大学学術交流会館
  • Year and Date: 2010-11-30
• [Presentation] タングステンダイバータタイルのLHDにおけるプラズマ壁相互作用 (2010)
  • Author(s): 時谷政行, 吉田直亮, 増崎貴, 野田信明, 相良明男, 山田弘司, 小森彰夫, LHD実験グループ, 永田晋二, 土屋文
  • Organizer: 第8回核融合エネルギー連合講演会
  • Place of Presentation: 高山市民文化会館
• [Presentation] Plasma Surface Interaction on the Surface of Tungsten Divertor Tiles in LHD (2010)
  • Author(s): M.Tokitani, N.Yoshida, S.Masuzaki, N.Noda, A.Sagara, H.Yamada, A.Komori, LHD experiment group
  • Organizer: 19th International Conference on Plasma Surface Interactions
  • Place of Presentation: San Diego, California, U.S.A.
• [Presentation] タングステン被覆黒鉛ダイバータタイルのLHDでの照射試験結果 (2009)
  • Author(s): 時谷政行
  • Organizer: プラズマ・核融合学会第26回年会
  • Place of Presentation: 京都市国際交流会館(京都府)
  • Year and Date: 2009-12-02
• [Presentation] Micro/nano structural analysis of mixed-material deposition layer formed on the first walls of Large Helical Device and its impact on dust generation (2009)
  • Author(s): 時谷政行
  • Organizer: 14th International Conference on Fusion Reactor Materials
  • Place of Presentation: Sapporo convention center Sapporo, Japan
  • Year and Date: 2009-09-07
• [Presentation] タングステン被覆黒鉛ダイバータタイルのLHDでの照射試験結果 (2009)
  • Author(s): 時谷政行, 吉田直亮, 増崎貴, 野田信明, 相良明男, 山田弘司, 小森彰夫, LHD実験グループ
  • Organizer: プラズマ・核融合学会第26回年会
  • Place of Presentation: 京都市国際交流会館
• [Presentation] Micro/nano structural analysis of mixed-material deposition layer formed on the first walls of Large Helical Device (2009)
  • Author(s): M.Tokitani, N.Yoshida, S.Masuzaki, N.Ashikawa, A.Sagara, N.Noda, H.Yamada, LHD experiment group
  • Organizer: 14th International Conference on Fusion Reactor Materials
  • Place of Presentation: Sapporo, Japan
• [Presentation] Microscopic deformation of tungsten surfaces by high energy and high flux helium/hydrogen particle bombardment with short pulses (2008)
  • Author(s): M.Tokitani, N.Yoshida, K.Tokunaga, H.Sakakita, S.Kiyama, H.Koguchi, Y.Hirano, S.Masuzaki
  • Organizer: 18th International Toki Conference
  • Place of Presentation: Toki, Gifu, Japan
• [Presentation] LHD第一壁上に形成されるミックスマテリアル再堆積層の構造解析 (2008)
  • Author(s): 時谷政行, 吉田直亮, 増崎貴, 芦川直子, 相良明男, 野田信明, 山田弘司, LHD実験グループ
  • Organizer: プラズマ・核融合学会第25回年会
  • Place of Presentation: 栃木県総合文化センター
• [Presentation] 高パワー密度イオンビーム照射されたタングステンにおける表面損傷形成機構 (2008)
  • Author(s): 時谷政行, 吉田直亮, 徳永和俊, 榊田創, 木山學, 小口治久, 平野洋一, 増崎貴
  • Organizer: 第7回核融合エネルギー連合講演会
  • Place of Presentation: 青森市民ホールおよび青森市男女共同参画プラザ
• [Presentation] Micro/nano scale modification of plasma facing components in LHD and its impact on the metal dust generations (2008)
  • Author(s): M.Tokitani, Y.Ohtawa, N.Yoshida, K.Tokunaga, T.Fujiwara, N.Ashikawa, S.Masuzaki, H.Yamada, A.Sagara, N.Noda, A.Komori, LHD experimental group
  • Organizer: 18th International Conference on Plasma Surface Interactions
  • Place of Presentation: Toledo, Spain
• [Presentation] Microscopic modification of plasma facing components in LHD and its impact on the metal dust generations (2008)
  • Author(s): 時谷政行
  • Organizer: 18th International Conference on Plasma Surface Interactions in Controlled Fusion Devices
  • Place of Presentation: Toledo, Spain
• [Presentation] LHD第一壁上に形成されるミックスマテリアル再堆積層の構造解析 (2008)
  • Author(s): 時谷政行
  • Organizer: プラズマ・核融合学会第25回年会
  • Place of Presentation: 栃木県宇都宮市
• [Presentation] Microscopic deformation of tungsten surfaces by high energy and high flux helium / hydrogen particle bombardment with short pulses (2008)
  • Author(s): M. Tokitani
  • Organizer: 18th International Told Conference
  • Place of Presentation: Toki, Gifu, Japan