Investigation of the trapped helium and hydrogen ions in plasma facing materials for LHD using thermal desorption spectrometer and alternating glow discharge cleanings

Y. Kubota, N. Noda, A. Sagara, H. Suzuki, S. Masuzaki, Kazutoshi Tokunaga, T. Satow, K. Yamazaki, O. Motojima

研究成果: Contribution to journalConference article査読

9 被引用数 (Scopus)

抄録

Preliminary experiment to evaluate, analyze, and reduce the gas accumulation of materials used in LHD as plasma facing components has been carried out using a test devices ACT and a thermal desorption spectrometer. As the test materials, stainless steel (SUS316L) and iso-graphite (IG-430U) are selected and installed inside the vacuum vessel of ACT as linings, which are near the same kinds as the first wall material and armor tile material of the divertor plate used in LHD, respectively. Each material is exposed to alternating glow discharge plasma with He and H2 gasses. Qualitative measurement using a quadruple mass filter indicates that the He gas amount released from the stainless steel wall during H2 glow discharge cleaning is several times as much as that released from the graphite wall, which is an unexpected result. This result does not contradict that of the thermal desorption spectrometer measurement for small samples exposed to He glow discharge plasma for 7 h.

本文言語英語
ページ(範囲)239-244
ページ数6
ジャーナルJournal of Nuclear Materials
313-316
SUPPL.
DOI
出版ステータス出版済み - 3 1 2003
イベントPlasma - Surface Interactions in Controlled Fusion Devices - Gifu, 日本
継続期間: 5 26 20025 31 2002

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

フィンガープリント 「Investigation of the trapped helium and hydrogen ions in plasma facing materials for LHD using thermal desorption spectrometer and alternating glow discharge cleanings」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル