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Spatial Profiles of NeVI-NeX Emission in ECR-Heated Discharges of the Large Helical Device with Divertor Detachment Induced by RMP Application and Ne Impurity Seeding
http://hdl.handle.net/10655/00013103
http://hdl.handle.net/10655/0001310339b00d0a-b828-4321-af64-55befe4d19d1
名前 / ファイル | ライセンス | アクション |
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pfr2022_17-2402022 (9.0 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-04-27 | |||||
タイトル | ||||||
タイトル | Spatial Profiles of NeVI-NeX Emission in ECR-Heated Discharges of the Large Helical Device with Divertor Detachment Induced by RMP Application and Ne Impurity Seeding | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | plasma spectroscopy | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | extreme ultraviolet | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | vacuum ultraviolet | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magnetically confined fusion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | impurity seeding | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | resonant magnetic perturbation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | divertor detachment | |||||
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 |
OISHI, Tetsutarou
× OISHI, Tetsutarou× KOBAYASHI, Masahiro× TAKAHASHI, Hiromi× HAYASHI, Yuki× MUKAI, Kiyofumi× MORITA, Shigeru× GOTO, Motoshi× KAWAMOTO, Yasuko× KAWATE, Tomoko× MASUZAKI, Suguru× SUZUKI, Chihiro× KAWAMURA, Gakushi× MOTOJIMA, Gen× SEKI, Ryosuke |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-1171-8603 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In the Large Helical Device, the divertor detachment has been attempted by application of resonant magnetic perturbation (RMP) field and Ne gas puffing in electron cyclotron resonance- heated discharges for compatibility of high central electron temperature and low divertor heat load. Two kinds of divertor detachment phases were observed. The first one appeared transiently just after the Ne gas puffing (1st detachment), and the second one appeared steadily in the latter half of the discharge (2nd detachment). Space-resolved extreme ultraviolet spectroscopy revealed that NeVI-NeVIII emissions increased slightly outside the last closed flux surface (LCFS), while NeIX and NeX emissions increased inside the LCFS in the 1st detachment phase. Although in the 1st detachment the divertor heat load was significantly reduced, the central electron temperature also decreased because the Ne ions were penetrated inside the LCFS as a radiation source. In the 2nd detachment phase, NeVI-NeVIII emissions increased outside the LCFS while NeIX and NeX emissions kept low intensity inside the LCFS. In this phase, low divertor heat load and high central electron temperature were obtained simultaneously because the Ne ions were localized outside the LCFS as a radiation source. The profile measurements of Ne emission show that the edge island structure created by the RMP application impacts on the impurity emission distribution, where the peak of the emission shifts radially stepwise as the detachment proceeds. | |||||
書誌情報 |
Plasma and Fusion Research 巻 17, 号 Special Issue 1, p. 2402022, 発行日 2022-04-22 |
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書誌的事項 | ||||||
the 30th International Toki Conference on Plasma and Fusion Research (ITC30) | ||||||
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.17.2402022 | |||||
権利 | ||||||
権利情報 | (c) 2022 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.17.2402022 | |||||
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 | ||||||
13201 |