Investigation on modification of plasma facing surface under long duration discharges by means of a collector probe in TRIAM-1M

Takeshi Hirai, Kazutoshi Tokunaga, Tadashi Fujiwara, Naoaki Yoshida, Satoshi Itoh

研究成果: ジャーナルへの寄稿学術誌査読

14 被引用数 (Scopus)

抄録

Metallic specimens mounted on a collector probe head were inserted in the scrape-off layer and exposed to long pulse tokamak plasma in TRIAM-1M. Strong radiation damage (formation of interstitial loops) was caused by high energy (>2 keV) charge-exchange hydrogen neutrals. The surfaces of the probe specimens were covered by new material made of co-deposited in-vessel elements such as Fe, Cr, Mo, O and C. The deposited layer was often exfoliated by blistering. These results indicate that energetic hydrogen neutrals and the co-deposition of impurities considerably change the surface properties of plasma facing components and even introduce new impurity sources.

本文言語英語
ページ(範囲)1060-1065
ページ数6
ジャーナルJournal of Nuclear Materials
258-263
PART 1 A
DOI
出版ステータス出版済み - 10月 1998

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 材料科学一般
  • 原子力エネルギーおよび原子力工学

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