2017年8月1日
Damage and deuterium retention of re-solidified tungsten following vertical displacement event-like heat load
Nuclear Materials and Energy
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- 巻
- 12
- 号
- 開始ページ
- 1303
- 終了ページ
- 1307
- 記述言語
- 英語
- 掲載種別
- 研究論文（学術雑誌）
- DOI
- 10.1016/j.nme.2016.11.003
- 出版者・発行元
- Elsevier Ltd
Surface morphology and hydrogen isotope retention of W specimen melted with vertical displacement event-like heat load and subsequent deuterium (D) plasma exposure were studied. Applied heat loads using electron beam without raster scanning were about 190 and 230 MW/m2 in heat flux and 0.08, 0.12 and 0.16 s in duration. After the heat load application, specimens showed apparent melting spots with grain growth or dense micrometer scale convex structure. Cracks were observed only in the part with the convex structure. D retention in the melted part of specimens was not significantly larger than in the reference specimen despite large changes of surface characteristics.