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Deuterium recombination coefficient on tungsten surface determined by plasma driven permeation
https://repo.qst.go.jp/records/84591
https://repo.qst.go.jp/records/8459169f8a070-9f1d-483d-a34d-718aaea8dabd
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-10-06 | |||||
タイトル | ||||||
タイトル | Deuterium recombination coefficient on tungsten surface determined by plasma driven permeation | |||||
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_6501 | |||||
資源タイプ | journal article | |||||
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 |
Zhao, Mingzhong
× Zhao, Mingzhong× Yamazaki, Shota× Wada, Takuro× Koike, Ayaka× Sun, Fei× Ashikawa, Naoko× Yoji, Someya× Mieno, Tetsu× Oya, Yasuhisa× Yoji, Someya |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Deuterium (D) plasma driven permeation (PDP) experiments for tungsten (W) samples were conducted by a linear radio frequency (RF) plasma device. In the PDP experiment, the W sample surface is perpendicular to the grain elongation direction. The D ion flux is in the order of 1021 m−2 s−1 determined by a double Langmuir probe. The results show that bias had a limited effect on the D plasma driven permeation behavior. The D recombination coefficient on W surface is obtained at the temperature ranging from 740 K to 1031 K. The experimentally measured recombination coefficient for a pristine W surface is lower than that for a clean W surface. The effect of recombination coefficient on the D permeation and retention behaviors in W are studied by Hydrogen Isotope Diffusion and Trapping (HIDT) simulation code. The low recombination coefficient leads to a high D concentration in W and a high permeation rate at the back surface. The D permeation rate through a 8 mm thick W with a pristine surface is estimated to be 8.1 × 1018 D m s−1 under the incident ion flux of 1 × 1024 m−2 s−1 and temperature of 1173 K. | |||||
書誌情報 |
Fusion Engineering and Design 巻 160, p. 111853, 発行日 2020-11 |
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出版者 | ||||||
出版者 | Elsevier | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0920-3796 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.fusengdes.2020.111853 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/pii/S0920379620304014 |