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Experimental study on boron distribution and transport at plasma-facing components during impurity powder dropping in the Large Helical Device
http://hdl.handle.net/10655/00013519
http://hdl.handle.net/10655/000135191914986e-8fab-42a8-99ab-68ba858525bf
名前 / ファイル | ライセンス | アクション |
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13474_Nucl.Fusion (3.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-11-15 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Experimental study on boron distribution and transport at plasma-facing components during impurity powder dropping in the Large Helical Device | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | wall conditioning | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | boronization | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | spectroscopy | |||||
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 |
KAWATE, Tomoko
× KAWATE, Tomoko× ASHIKAWA, Naoko× GOTO, Motoshi× OISHI, Tetsutarou× KAWAMOTO, Yasuko× TOYODA, Hirotaka× SHOJI, Mamoru× KAWAMURA, Gakushi× MASUZAKI, Suguru× NESPOLI, Federico× GILSON, Eric P× LUNSFORD, Robert× SUZUKI, Chihiro× NAGY, Alex× GATES, David |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-1021-0322 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Toward real-time wall conditioning, impurity powder dropping experiments with boron powder were performed in the 22nd experimental campaign of the Large Helical Device. To examine the deposition and desorption process of boron, we focus on boron hydride (BH) molecules which presumably populate near plasma-facing components. We performed spatially-resolved spectroscopic measurements of emission by boron ions and BH molecules. From the measurement, we found that BH and B+ were concentrated on the divertor viewing chord, which suggest boron deposition in the divertor region. By comparing Hγ emissions with and without boron injection, neutral hydrogen shows uniform reduction in the SOL region, whereas less reduction of neutral hydrogen is confirmed in the divertor region. Although emissions from BH and B+ increased linearly, emissions by B0 and B4+ became constant after the middle of the discharge. Continuous reduction of carbon density in the core plasma was confirmed even after B0 and B4+ became constant. The results may show reduction of hydrogen recycling and facilitation of impurity gettering by boron in the divertor region and thus effective real-time wall conditioning. | |||||
書誌情報 |
Nuclear Fusion 巻 62, 号 12, p. 126052, 発行日 2022-11-03 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0029-5515 | |||||
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 | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1741-4326/ac9ac6 | |||||
権利 | ||||||
権利情報 | © 2022 The Author(s). | |||||
権利 | ||||||
権利情報 | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. | |||||
権利 | ||||||
権利情報 | Any further distribution of this work must maintain attributionto the author(s) and the title of the work, journal citation and DOI. | |||||
情報源 | ||||||
関連名称 | T. Kawate et al 2022 Nucl. Fusion 62 126052 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ac9ac6 | |||||
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 | ||||||
13474 |