LHDプラズマに曝したステンレス鋼の表面変質とヘリウムの吸蔵・放出

書誌事項

タイトル別名
  • Surface Properties and Retention of Helium in Stainless Steel Exposed to LHD Plasmas

この論文をさがす

抄録

Modification of the plasma facing surface of LHD and its effects on the retention and desorption of He were examined by exposing 316L stainless steel coupons to LHD plasmas. In the erosion dominant area, formation of dense He bubbles and mixing of deposited impurities (C, O, Fe, Cr, Ni) occurred in a subsurface region of about 20 nm-thick. In the deposition dominant area, the surface was covered by a porous carbon rich layer. Retention of He was saturated in both areas. In the erosion dominant area, He was trapped by the radiation-induced defects formed in the very thin subsurface region. The concentration of He trapped in the impurity deposition (He/C) in the deposition dominant area was estimated to be 0.9%.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ