| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2022-11-21 |
| タイトル |
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|
タイトル |
Characterization of isotope effect on ion internal transport barrier and its parameter dependence in the Large Helical Device |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
isotope effect |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
internal transport barrier |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
turbulence |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
radial electric field |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
stellarators |
| 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 |
KOBAYASHI, Tatsuya
TAKAHASHI, Hiromi
NAGAOKA, Kenichi
TANAKA, Kenji
SEKI, Ryosuke
HAMAGUCHI, Hiroyuki
NAKATA, Motoki
SASAKI, Makoto
YOSHINUMA, Mikiro
IDA, Katsumi
|
| 著者ID |
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内容記述タイプ |
Other |
|
内容記述 |
0000-0001-5669-1937 |
| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
In this paper, the background physics of the isotope effects in the ion internal transport barrier (ITB) are discussed in detail. An heuristic criterion for the ITB strength is defined based on the nonlinear dependence of the ion thermal diffusivity on the local ion temperature in the L-mode phase. Comparing deuterium plasmas and hydrogen plasmas, two isotope effects on the ion ITB are clarified: stronger ITBs formed in the deuterium plasmas and an ITB concomitant edge confinement degradation in the hydrogen plasmas. Principal component analysis reveals that the ion ITB becomes strong when a high input power normalized by the line averaged electron density is applied and electron density profile is peaked. A gyrokinetic simulation suggests that the ITB profile is determined by the ion temperature gradient driven turbulence, while the way the profile saturates in L-mode plasmas is unknown. In the electron density turbulence behavior, a branch transition is observed, where the increasing trend in turbulence amplitude against the ITB strength is flipped to a decreasing trend across the ITB formation. The radial electric field structure is measured by the charge exchange recombination spectroscopy system. It is found that the radial electric field shear plays a minor role in determining the ITB strength. |
| 書誌情報 |
Nuclear Fusion
巻 61,
号 12,
p. 126013,
発行日 2021-10-22
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| 出版者 |
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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 |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00759871 |
| DOI |
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関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1088/1741-4326/ac298f |
| 権利 |
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|
権利情報 |
© 2021 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. Any further distribution of this work mustmaintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| 情報源 |
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|
関連名称 |
T. Kobayashi et al 2021 Nucl. Fusion 61 126013 |
| 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/ac298f |
|
|
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 |
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|
13302 |
13302_Nucl.Fusion (4.0 MB)
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