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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/10655/00013519
1914986e-8fab-42a8-99ab-68ba858525bf
名前 / ファイル ライセンス アクション
13474_Nucl._Fusion.pdf 13474_Nucl.Fusion (3.7 MB)
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Item type 学術雑誌論文 / Journal Article(1)
公開日 2022-11-15
タイトル
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 en
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

KAWATE, Tomoko

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ASHIKAWA, Naoko

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ASHIKAWA, Naoko

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GOTO, Motoshi

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GOTO, Motoshi

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OISHI, Tetsutarou

× OISHI, Tetsutarou

OISHI, Tetsutarou
OISHI, Tetsutaro

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KAWAMOTO, Yasuko

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KAWAMOTO, Yasuko

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TOYODA, Hirotaka

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TOYODA, Hirotaka

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SHOJI, Mamoru

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SHOJI, Mamoru

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KAWAMURA, Gakushi

× KAWAMURA, Gakushi

KAWAMURA, Gakushi

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MASUZAKI, Suguru

× MASUZAKI, Suguru

MASUZAKI, Suguru

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NESPOLI, Federico

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NESPOLI, Federico

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GILSON, Eric P

× GILSON, Eric P

GILSON, Eric P
GILSON, Eric

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LUNSFORD, Robert

× LUNSFORD, Robert

LUNSFORD, Robert

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SUZUKI, Chihiro

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SUZUKI, Chihiro

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NAGY, Alex

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NAGY, Alex

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GATES, David

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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
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
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Cite as

KAWATE, Tomoko, ASHIKAWA, Naoko, GOTO, Motoshi, OISHI, Tetsutaro, KAWAMOTO, Yasuko, TOYODA, Hirotaka, SHOJI, Mamoru, KAWAMURA, Gakushi, MASUZAKI, Suguru, NESPOLI, Federico, GILSON, Eric, LUNSFORD, Robert, SUZUKI, Chihiro, NAGY, Alex, GATES, David, 2022, Experimental study on boron distribution and transport at plasma-facing components during impurity powder dropping in the Large Helical Device: IOP Publishing, 126052– p.

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