| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2021-07-06 |
| タイトル |
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タイトル |
Impact of a resonant magnetic perturbation field on impurity radiation, divertor footprint, and core plasma transport in attached and detached plasmas in the Large Helical Device |
| 言語 |
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|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
detachment |
| キーワード |
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主題Scheme |
Other |
|
主題 |
resonant magnetic perturbation field |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
divertor |
| キーワード |
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|
主題Scheme |
Other |
|
主題 |
impurity emission |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
core plasma transport |
| キーワード |
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主題Scheme |
Other |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
KOBAYASHI, Masahiro
SEKI, Ryosuke
MASUZAKI, Suguru
MORITA, Shigeru
Zhang, H.M.
NARUSHIMA, Yoshiro
TANAKA, Hirohiko
TANAKA, Kenji
TOKUZAWA, Tokihiko
YOKOYAMA, Masayuki
IDO, Takeshi
YAMADA, Ichihiro
LHD Experiment Group,
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
The effects of resonant magnetic perturbation (RMP) field on impurity radiation, divertor footprint distribution, and core plasma transport are investigated in the detachment discharges of the Large Helical Device (LHD). The RMP with m/n = 1/1 mode creates an edge magnetic island in the stochastic layer, which enhances the impurity emission from low charge states, C2+ and C3+, and then triggers a detachment transition. Emission from the higher charge states, C4+ and C5+, implies enhanced penetration of impurities during the detachment phase with RMP. The toroidal divertor particle flux distribution exhibits n = 1 mode structure in both the attached and detached phases, but with a large toroidal phase shift between the two phases. The distribution in the attached phase is well correlated with the magnetic footprint of field line connection length calculated by the vacuum approximation. During the detached phase, however, the phase shift is not well explained by the vacuum approximation, where a significant plasma response to the external RMP is observed. The energy confinement time becomes systematically shorter with RMP application due to the shrinkage of plasma volume caused by the edge magnetic island. On the other hand, the pressure profile during detachment with RMP is found to be more peaked than without RMP. The analysis using the core transport code TASK3D, considering the heating profiles of neutral beam injection, shows no significant transport degradation during detachment with RMP application, even with the enhanced radiation, reduced divertor flux, and possible impurity penetration. |
| 書誌情報 |
Nuclear Fusion
巻 59,
号 9,
p. 096009,
発行日 2019-07-19
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| 出版者 |
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出版者 |
IOP Publishing |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00295515 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00759871 |
| DOI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1088/1741-4326/ab26e6 |
| 権利 |
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|
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/10.1088/1741-4326/ab26e6]. |
| 情報源 |
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関連名称 |
M. Kobayashi et al 2019 Nucl. Fusion 59 096009 |
| 関連サイト |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1088/1741-4326/ab26e6 |
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|
関連名称 |
Publisher version |
| 著者版フラグ |
|
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出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| NAIS |
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Nucl.Fusion59(9)_pp096009 (805.2 kB)
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