Studies on tritium retention in surface deposition layers of plasma-facing materials

• Project/Area Number: 25289335
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Nuclear fusion studies
• Research Institution: University of Toyama
• Principal Investigator: MATSUYAMA MASAO 富山大学, 研究推進機構水素同位体科学研究センター, その他 客員教授 (90135004)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000); Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2014: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000); Fiscal Year 2013: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
• Keywords: トリチウム / 保持量 / 非破壊測定 / 新規ＢＩＸＳ / 核融合炉材料 / 新規BIXS / その場測定 / BIXS / 核融合炉 / BIXS法 / 非破壊分析 / プラズマ / 対向材料

Outline of Final Research Achievements

In this study, to contribute the consideration of safety measures in maintenance work and fuel control in a fusion reactor, the advanced beta-ray-induced X-ray spectrometry (Advanced-BIXS), which is able to evaluate nondestructively tritium retention in a material in vacuum, was established and its applicability has been investigated. Purpose of the present study was to establish the Advanced-BIXS and basic database on trapping and release behavior of tritium by using it. The applicability and availability of the Advanced-BIXS was examined by measuring tritium-containing samples without air exposure during a cycle of vacuum heating, tritium exposure and measurements of an X-ray spectrum emitted from a sample.

Research Products

• [Journal Article] Ｈｅｌｉｕｍ ｉｒｒａｄｉａｉｔｏｎ ｅｆｆｅｃｔｓ ｏｎ ｔｒｉｔｉｕｍ ｒｅｔｅｎｔｉｏｎ ａｎｄ ｌｏｎｇ－ｔｅｒｍ ｔｒｉｔｉｕｍ ｒｅｌｅａｓｅ ｐｒｏｐｅｒｔｉｅｓ ｉｎ ｐｏｌｙｓｒｙｓｔａｌｌｉｎｅ ｔｕｎｇｓｔｅｎ． (2015)
  • Author(s): Ｙ． Ｎｏｂｕｔａ， Ｙ． Ｈａｔａｎｏ， Ｍ． Ｍａｔｓｕｙａｍａ， Ｓ． Ａｂｅ， Ｙ． Ｙａｍａｕｃｈｉ， Ｔ． Ｈｉｎｏ
  • Journal Title: Ｊournal of Ｎｕｃｌear Ｍａｔｅｒials Volume: 463 Pages: 993-996
  • DOI: 10.1016/j.jnucmat.2014.12.047
  • Peer Reviewed
• [Journal Article] Ｉｓｏｔｏｐｅ eｆｆｅｃｔｓ ｏｎ desorption kinetics of hydrogen isotopes implanted into stainless steel by glow discharge. (2015)
  • Author(s): M. Matsuyama, M. Kondo, N. Noda, M. Tanaka, K. Nishimura
  • Journal Title: Fusion Science and Technolgy Volume: 67 Pages: 471-474
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Advanced b-ray-induced X-rayspectrometry for non-destructive measurements of tritium retained in fusion related materials. (2015)
  • Author(s): M. Matsuyama, S. Abe
  • Journal Title: Fusion Engineering and Design Volume: 印刷中
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Isotope Effects on Desorption Kinetics of Hydrogen Isotopes Implanted into Stainless Steel by Glow Discharge (2015)
  • Author(s): Masao Matsuyama, Masamitsu Kondo, Nobuaki Noda, Masahiro Tanaka, and Kiyohiko Nishimura
  • Journal Title: Fusion Science and Technology Volume: 67 Pages: 471-474
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Tracking of tritium retention in stainless steel by BIXS (2015)
  • Author(s): Masao Matsuyama, Shinsuke Abe
  • Organizer: Asia-Pacific Symposium on Tritium Science
  • Place of Presentation: Mianyang, Sichuan, China
  • Year and Date: 2015-11-01
  • Int'l Joint Research
• [Presentation] Advanced b-ray-induced X-ray spectrometry for non-destructive measurement of tritium retained in fusion related materials (2015)
  • Author(s): Masao Matsuyama, Shinsuke Abe
  • Organizer: 12th International Symposium on Fusion Nuclear Technology
  • Place of Presentation: Jeju Island, Korea
  • Year and Date: 2015-08-14
  • Int'l Joint Research
• [Presentation] Tritium desorption behavior and tritium removal by baking in helium-irradiated tungsten (2015)
  • Author(s): Y. Nobuta, Y. Hatano, Y. Torikai, M. Matsuyama, S. Abe, Y. Yamauchi
  • Organizer: 12th International Symposium on Fusion Nuclear Technology
  • Place of Presentation: Jeju Island, Korea
  • Year and Date: 2015-08-14
  • Int'l Joint Research
• [Presentation] Trititum Retention in Stainless Steel Pre-irradiated with Helium. (2014)
  • Author(s): Masao Matsuyama and Shinsuke Abe
  • Organizer: Plasama Conference 2014
  • Place of Presentation: Toki Messe, Niigata, Japan
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Effects of Helium Irradiation for Tritium Retention in Stainless Steel. (2014)
  • Author(s): Shinsuke Abe and Masao Matsuyama
  • Organizer: The 24th International Toki Conference (ITC-24) on "Expanding Horizons of Plasama and Fusion Science through Cross-Fertilization"
  • Place of Presentation: Ceratopia Toki, Toki-city, Gifu, Japan
  • Year and Date: 2014-11-04 – 2014-11-07
• [Presentation] Research Activity on Tritium-Material Interactions in Hydrogen Isotope Research Center (HRC) (2014)
  • Author(s): Masao Matsuyama
  • Organizer: 12th Japan-China Symposium on Materials for Advanced Energy Systems and Fission & Fusion Engineering
  • Place of Presentation: Azarea, SHIZUOKA JAPAN
  • Year and Date: 2014-09-17 – 2014-09-20
• [Presentation] Tritium retention on stainless steel surface exposed to plasmas in LHD (III) (2013)
  • Author(s): M. Matsuyama, S. Abe, K. Nishimura, N. Ashikawa, Y. Oya, K. Okuno, Y. Yamauchi, Y. Nobuta, and A. Sagara
  • Organizer: 23rd International Toki Conference on Large-scale Simulation and Fusion Science
  • Place of Presentation: Ceratopia Toki, Toki-city, Gifu