WEKO3
アイテム
Correlation of surface chemical states with hydrogen isotope retention in divertor tiles of JET with ITER-Like Wall
https://repo.qst.go.jp/records/66802
https://repo.qst.go.jp/records/668027ccbaf92-439d-474c-929d-bb0884f9e8b1
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-03 | |||||
| タイトル | ||||||
| タイトル | Correlation of surface chemical states with hydrogen isotope retention in divertor tiles of JET with ITER-Like Wall | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Oya, Yasuhisa
× Oya, Yasuhisa× Masuzaki, Suguru× Tokitani, Masayuki× Azuma, Keisuke× Oyaizu, Makoto× Isobe, Kanetsugu× Asakura, Nobuyuki× M., Widdowson Anna× Heinola, Kalle× Jachmich, Stefan× Rubel, Marek× contributors, JET× 小柳津 誠× 磯部 兼嗣× 朝倉 伸幸 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | To understand the fuel retention mechanism, correlation of surface chemical states and hydrogen isotope retention behavior determined by XPS (X-ray photoelectron spectroscopy) and TDS (Thermal desorption spectroscopy), respectively, for JET ITER-Like Wall samples from operational period 2011-2012 were investigated. It was found that the deposition layer was formed on the upper part of the inner vertical divertor area. At the inner plasma strike point region, the original surface materials, W or Mo, were found, indicating to an erosion-dominated region, but deposition of impurities was also found. Higher heat load would induce the formation of metal carbide. At the outer horizontal divertor tile, mixed material layer was formed with iron as an impurity. TDS showed the H and D desorption behavior and the major D desorption temperature for the upper part of the inner vertical tile was located at 370 °C and 530 °C. At the strike point region, the D desorption temperature was clearly shifted toward higher release temperatures, indicating the stabilization of D trapping by higher heat load. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 2nd Asia-Pacific Symposium on Tritium science | |||||
| 発表年月日 | ||||||
| 日付 | 2017-09-05 | |||||
| 日付タイプ | Issued | |||||
