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Dynamics of Hydrogen Isotope Absorption and Emission of Neutron-Irradiated Tungsten
http://hdl.handle.net/10655/00012993
http://hdl.handle.net/10655/00012993bc00c481-b1ca-4540-b4fa-c207e337f154
名前 / ファイル | ライセンス | アクション |
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pfr2020_15-1505081 (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-02-09 | |||||
タイトル | ||||||
タイトル | Dynamics of Hydrogen Isotope Absorption and Emission of Neutron-Irradiated Tungsten | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | tungsten | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | neutron irradiation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | TDS | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | deuterium | |||||
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 | |||||
著者 |
TOYAMA, Takeshi
× TOYAMA, Takeshi× YAJIMA, Miyuki× OHNO, Noriyasu× KUWABARA, Tatsuya× ALIMOV, Vladimir Kh.× HATANO, Yuji |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This overview presents recent results regarding hydrogen isotope absorption and emission dynamics in neutron-irradiated tungsten (W) using our recently developed Compact Diverter Plasma Simulator (CDPS), a linear plasma device in a radiation-controlled area. Neutron irradiation to 0.016 - 0.06 displacement per atom resulted in a significant increase in deuterium (D) retention due to trapping effects of radiation-induced defects. We analyzed the dependency of D retention on the D plasma fluence by exposing neutron-irradiated pure W to D plasma at 563 K over a range of D fluence values. The total retention was revealed to be proportional to the square root of D fluence, indicating that the implanted D atoms first occupy the defects caused by neutron-irradiation near the surface and then the defects located in deeper regions. We further investigated the effects of post-plasma annealing on D emission; neutron-irradiated pure W was exposed to D plasma at 573 K and was then annealed at the same temperature for 30 hours. Approximately 10% of the absorbed D was released by annealing, suggesting that a heat treatment of the plasma-facing component of a fusion reactor at moderately elevated temperatures could contribute to the removal of accumulated hydrogen isotopes. The experimental results obtained in this study were only available by investigating neutron-irradiated specimens with the CDPS system, which will be essential for future studies of material behavior and plasma-wall interactions in the fusion reactor environment. | |||||
書誌情報 |
Plasma and Fusion Research 巻 15, p. 1505081, 発行日 2020-11-19 |
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出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-6821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.15.1505081 | |||||
権利 | ||||||
権利情報 | (c) 2020 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1585/pfr.15.1505081 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
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