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Super-saturated hydrogen effects on radiation damages in tungsten under the high-flux divertor plasma irradiation
http://hdl.handle.net/10655/00012796
http://hdl.handle.net/10655/000127964fb8ee34-1497-4b8e-83f4-48fc010f72c5
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion55_pp083019 (768.0 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-21 | |||||
タイトル | ||||||
タイトル | Super-saturated hydrogen effects on radiation damages in tungsten under the high-flux divertor plasma irradiation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | tungsten divertor | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | radiation damage | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | density functional theory | |||||
キーワード | ||||||
主題Scheme | Other | |||||
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 |
KATO, Daiji
× KATO, Daiji× IWAKIRI, Hirotomo× MORISHITA, Kazunori× MUROGA, Takeo |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-5302-073X | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Tungsten is a prime candidate as the divertor material of the ITER and DEMO reactors, which would be exposed to unprecedentedly high-flux plasmas as well as neutrons. For a better characterization of radiation damages in the tungsten under the divertor condition, we examine influences of super-saturated hydrogen on vacancies in the tungsten. The present calculations based on density functional theory (DFT) reveal unusual phenomena predicted at a super-saturated hydrogen concentration: (1) strongly enhanced vacancy concentration with the super-saturated hydrogen concentration is predicted by a thermodynamics model assuming multiple-hydrogen trapping, i.e. hydrogen clusters formation, in the vacancies; and (2) DFT molecular dynamics revealed that hydrogen clusters can prevent a vacancy from recombining with the neighboring crowdion-type self-interstitial-atom. This suggests that neutron damage effects will be increased in the presence of the hydrogen clusters. | |||||
書誌情報 |
Nuclear Fusion 巻 55, 号 8, p. 083019, 発行日 2015-07-14 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00295515 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00759871 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/0029-5515/55/8/083019 | |||||
権利 | ||||||
権利情報 | This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/0029-5515/55/8/083019. | |||||
情報源 | ||||||
関連名称 | Citation D. Kato et al 2015 Nucl. Fusion 55 083019 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/0029-5515/55/8/083019 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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