Experimental studies on in-vessel tritium inventory in complicated environment of fusion reactors

2011 Fiscal Year Final Research Report

• Project Area: Tritium Science and Technology for Fusion Reactor
• Project/Area Number: 19055003
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: UEDA Yoshio 大阪大学, 大学院・工学研究科, 教授 (30193816)
• Co-Investigator(Kenkyū-buntansha): HINO Tomoaki 北海道大学, 工学研究科, 教授 (30109491) ; OHNO Noriyasu 名古屋大学, 工学研究科, 教授 (60203890) ; TAKAGI Ikuji 京都大学, 工学研究科, 教授 (20206717) ; NAKANO Tomohide 独立行政法人日本原子力研究開発機構, 核融合研究開発部門, 副主任研究員 (50354593) ; TANABE Tetsuo 九州大学, 総合理工学研究科, 教授 (00029331) ; NAGATA Shinji 東北大学, 金属材料研究所, 准教授 (40208012) ; MASAKI Kei 独立行政法人日本原子力研究開発機構, 核融合研究開発部門, 研究職 (10354648)
• Project Period (FY): 2007 – 2011
• Keywords: 核融合炉 / トリチウム / プラズマ壁相互作用 / 照射損傷 / 材料混合 / スパッタリング / 再堆積 / トリチウム除去

Research Abstract

In order to understand tritium accumulation behavior and to develop tritium removal methods in fusion reactors, experimental researches have been done for retention and permeation under mixed ion irradiation, retention in high-energy ion damaged tungsten, generation and retention of dust particles, erosion-transport-deposition of wall materials and its effects on retention in JT-60U tokamak, and removal of hydrogen isotopes from redeposition layers. Many useful results have been obtained for estimation of T retention in fusion reactors.

Research Products

• [Journal Article] Ion-driven permeation of deuterium through tungsten under simultaneous helium and deuterium irradiation (2011)
  • Author(s): H.T. Lee, H. Tanaka, Y. Ohtsuka, Y. Ueda
  • Journal Title: Journal of Nuclear Materials Volume: 415 Pages: S696-S700
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311510008457
  • Peer Reviewed
• [Journal Article] Ion-driven permeation of deuterium in tungsten by deuterium and carbon-mixed ion irradiation (2011)
  • Author(s): H Y Peng, H T Lee, Y Ohtsuka and Y Ueda
  • Journal Title: Physica Scripta Volume: T145 Pages: 014046(4)
  • URL: http://iopscience.iop.org/1402-4896/2011/T145/014046
  • Peer Reviewed
• [Journal Article] Effects of carbon impurity on deuterium retention in VPS-tungsten coatings exposed to JT-60U divertor plasmas (2011)
  • Author(s): M. Fukumoto, T. Nakano, K. Itami, T. Wada, Y. Ueda, T. Tanabe
  • Journal Title: Journal of Nuclear Materials Volume: 415 Pages: S705-S708
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311511000067
  • Peer Reviewed
• [Journal Article] Hydrogen isotope retention and desorption for tungsten during glow discharges (2011)
  • Author(s): Y. Yamauchi, Y. Kimura, Y. Kosaka, Y. Nobuta, T. Hino, K. Nishimura and Y. Ueda
  • Journal Title: Fusion Science and Technology Volume: 60 Pages: 1475-1478
  • URL: http://www.new.ans.org/pubs/journals/fst/a_12710
  • Peer Reviewed
• [Journal Article] Construction of fuel retention model for full carbon devices (2011)
  • Author(s): M. Yoshida, T. Tanabe, T. Hayashi, H. Nakano, K. Masaki and K. Itami
  • Journal Title: Physica Scripta Volume: T145 Pages: 014023(5)
  • URL: http://iopscience.iop.org/1402-4896/2011/T145/014023
  • Peer Reviewed
• [Journal Article] Deuterium recombination coefficients on tungsten exposed to RF plasma (2011)
  • Author(s): I. Takagi, R. Imade, Y. Ikegami, M. Akiyoshi, K. Moritani, T. Sasaki, H. Moriyama
  • Journal Title: Journal of Nuclear Materials Volume: 417 Pages: 564-567
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311510009372
  • Peer Reviewed
• [Journal Article] Removal of the deposition on JT-60 tile by nano-sec pulsed-laser irradiation (2010)
  • Author(s): K. Sugiyama, Y. Sakawa, T. Tanabe, D. Watanabe, T. Shibahara, K. Masaki
  • Journal Title: J. Nucl.Mater Volume: 405 Pages: 70-73
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311510003478
  • Peer Reviewed
• [Journal Article] Self-Affine Fractality of Bifurcating Arc Trail in Magnetized Plasma (2010)
  • Author(s): S. KAJITA, N. OHNO, Y. TSUJI, H. TANAKA, S. TAKAMURA
  • Journal Title: Journal of the Physical Society of Japan Volume: 79(5) Pages: 054501(7)
  • URL: http://jpsj.ipap.jp/link?JPSJ/79/054501/
  • Peer Reviewed
• [Journal Article] Ion irradiation effects on the optical properties of tungsten oxide films (2010)
  • Author(s): S. Nagata, H. Fujita, A. Inouye, S. Yamamoto, B. Tsuchiya, T. Shikama
  • Journal Title: NUCLEAR INSTRUMENTS & METHODS Volume: B268 (19) Pages: 3151-3154
  • URL: http://www.sciencedirect.com/science/article/pii/S0168583X10005264
  • Peer Reviewed
• [Journal Article] Formation process of tungsten nanostructure by the exposure to helium plasma under fusion relevant plasma conditions (2009)
  • Author(s): Shin Kajita, Wataru Sakaguchi, Noriyasu Ohno, Naoaki Yoshida, Tsubasa Saeki
  • Journal Title: Nucl. Fusion Volume: 49 Pages: 095005(6)
  • URL: http://iopscience.iop.org/0029-5515/49/9/095005
  • Peer Reviewed
• [Journal Article] Radiation process of carbon ions in JT-60U detached divertor plasmas (2009)
  • Author(s): T. Nakano, H. Kubo, N. Asakura, K. Shimizu, H. Kawashima, S. Higashijima
  • Journal Title: Journal of Nuclear Materials Volume: 390-391 Pages: 255-258
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311509001081
  • Peer Reviewed
• [Journal Article] Tungsten Accumulation in H-Mode Plasmas of JT-60U (2009)
  • Author(s): T. Nakano, N. Asakura, H. Kubo, J. Yanagibayashi, Y. Ueda
  • Journal Title: Nuclear Fusion Volume: 49 Pages: 115024
  • URL: http://iopscience.iop.org/0029-5515/49/11/115024
  • Peer Reviewed
• [Journal Article] Hydrogen isotope retention in the outboard first wall tiles of JT-60U (2009)
  • Author(s): M. Yoshida, T. Tanabe, Y. Nobuta, T. Hayashi, K. Masaki and M. Sato
  • Journal Title: Journal of Nuclear Materials Volume: 390-391 Pages: 635-638
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311509001974
  • Peer Reviewed
• [Journal Article] Simultaneous irradiation effects of hydrogen and helium ions on tungsten (2009)
  • Author(s): Y. Ueda, M. Fukumoto, J. Yoshida, Y. Ohtsuka, R. Akiyoshi, H. Iwakiri, N. Yoshida
  • Journal Title: Journal of Nuclear Materials Volume: 386-388 Pages: 725-728
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311508009690
  • Peer Reviewed
• [Journal Article] Deuterium trapping in tungsten damaged by high-energy hydrogen ion irradiation (2009)
  • Author(s): M. Fukumoto, H. Kashiwagi, Y. Ohtsuka, Y. Ueda, M. Taniguchi, T. Inoue, K. Sakamoto, J.Yagyu, T. Arai, I. Takagi, T.Kawamura
  • Journal Title: Journal of Nuclear Materials Volume: 390-391 Pages: 572-575
  • URL: http://www.sciencedirect.com/science/article/pii/S0022311509001822
  • Peer Reviewed
• [Journal Article] Prompt ignition of a unipolar arc on helium irradiated tungsten (2009)
  • Author(s): S. Kajita, S. Takamura, N. Ohno
  • Journal Title: Nuclear Fusion Volume: 49 Pages: 032002(4)
  • URL: http://iopscience.iop.org/0029-5515/49/3/032002/
  • Peer Reviewed
• [Journal Article] Volume recombination of C^<4+> in detached divertor plasmas of JT-60U (2007)
  • Author(s): T. Nakano, H. Kubo, N. Asakura, et al. (8人)
  • Journal Title: Nucl. Fusion Volume: 47 Pages: 1458-1467
  • URL: http://iopscience.iop.org/0029-5515/47/11/007
  • Peer Reviewed
• [Journal Article] Sub-ms Laser Pulse Irradiation on Tungsten Target Damaged by Exposure to Helium Plasma (2007)
  • Author(s): S. Kajita, S. Takamura, N. Ohno, D. Nishijima, H. Iwakiri, N. Yoshida
  • Journal Title: Nuclear Fusion Volume: 47 Pages: 1358-1366
  • URL: http://iopscience.iop.org/0029-5515/47/9/038
  • Peer Reviewed
• [Journal Article] Hydrogen Retention and Carbon Deposition in Plasma Facing Wall and Shadowed Area of JT-60U (2007)
  • Author(s): K. Masaki, T. Tanabe, Y. Hirohata, Y. Oya, T. Shibahara, et al. (10人)
  • Journal Title: Nuclear Fusion Volume: 47 Pages: 1577-1582
  • URL: http://iopscience.iop.org/0029-5515/47/11/020
  • Peer Reviewed
• [Presentation] LHDにおける受熱板熱負荷軽減運転 (2011)
  • Author(s): 大野哲靖
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 石川県立音楽堂(招待講演)
  • Year and Date: 2011-11-24
• [Presentation] Helium Effects on Tungsten Surface Morphology and Deuterium Retention (2011)
  • Author(s): Y. Ueda
  • Organizer: 15th International Conference on Fusion Reactor Materials
  • Place of Presentation: Charleston (USA)(招待講演)
  • Year and Date: 2011-10-18
• [Presentation] Deuterium Permeation in Tungsten by Mixed Ion Irradiation (2011)
  • Author(s): Y. Ueda
  • Organizer: 10th International Symposium on Fusion Nuclear Technology
  • Place of Presentation: Portland(USA)(招待講演)
  • Year and Date: 2011-09-12
• [Presentation] Recent Progress of Tungsten R&D for Fusion Application in Japan (2011)
  • Author(s): Y. Ueda
  • Organizer: 13th International Workshop on Plasma-Facing Materials and Components for Fusion Applications
  • Place of Presentation: Rosenheim (Germany)(招待講演)
  • Year and Date: 2011-05-11
• [Presentation] TEXTORトカマク装置における高Z材テストリミター実験 (2010)
  • Author(s): 上田良夫
  • Organizer: プラズマ・核融合学会 第27回年会
  • Place of Presentation: 北海道大学(招待講演)
  • Year and Date: 2010-12-03
• [Presentation] Tungsten transport and accumulation in JT-60U (2010)
  • Author(s): T. Nakano
  • Organizer: 19^<th> international conference on plasma-surface interactions in controlled fusion devices (PSI-19)
  • Place of Presentation: San-Diego (USA)(招待講演)
  • Year and Date: 2010-05-27
• [Presentation] Overview of recent erosion-deposition and hydrogen retention studies in JT-60U (2009)
  • Author(s): T. Tanabe
  • Organizer: 12th International Workshop on Plasma-Facing Materials and Components for Fusion Applications
  • Place of Presentation: Juelich(Germany)(招待講演)
  • Year and Date: 2009-05-13
• [Presentation] Balance of ionization and recombination of carbon ions in high density peripheral plasmas of the JT-60U tokamak (2008)
  • Author(s): T. Nakano
  • Organizer: The 6th International Conference on Atomic and Molecular Data and their Applications
  • Place of Presentation: Beijing (China)(招待講演)
  • Year and Date: 2008-10-30
• [Presentation] 直線型ダイバータ模擬装置における素過程の解明 (2008)
  • Author(s): 大野哲靖
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学(招待講演)
  • Year and Date: 2008-09-22
• [Presentation] Effects of tungsten surface conditions on carbon deposition (2008)
  • Author(s): Y. Ueda
  • Organizer: 18th Plasma Surface Interaction Conference (PSI2008)
  • Place of Presentation: Toledo(Spain)(招待講演)
  • Year and Date: 2008-05-27