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Transport characteristics of deuterium and hydrogen plasmas with ion internal transport barrier in the Large Helical Device
http://hdl.handle.net/10655/00012779
http://hdl.handle.net/10655/00012779fb1ff94f-e0dc-4c56-a626-8b43ae7835e3
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion59_pp106002 (885.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-17 | |||||
タイトル | ||||||
タイトル | Transport characteristics of deuterium and hydrogen plasmas with ion internal transport barrier 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 | ion internal transport barrier | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ion temperature gradient mode | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | helical/stellarator plasmas | |||||
キーワード | ||||||
主題Scheme | Other | |||||
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 |
NAGAOKA, Kenichi
× NAGAOKA, Kenichi× TAKAHASHI, Hiromi× Nakata, Motoki× SATAKE, Shinsuke× TANAKA, Kenji× Mukai, Kiyofumi× YOKOYAMA, Masayuki× NAKANO, Haruhisa× MURAKAMI, Sadayoshi× IDA, Katsumi× YOSHINUMA, Mikiro× OHDACHI, Satoshi× Bando, T.× NUNAMI, Masanori× SEKI, Ryosuke× Yamaguchi, Hiroyuki× OSAKABE, Masaki× MORISAKI, Tomohiko× LHD, Experiment Group |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-5892-6047 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A remarkable extension of the high-ion-temperature (high-Ti) regime was obtained in deuterium plasma experiments in the Large Helical Device. In order to clarify transport characteristics in the ion internal transport barrier (ITB) formation with an isotope effect, a dataset of pure deuterium (nD/ne > 0.8) and pure hydrogen (nH/ne > 0.8) plasmas in the high-Ti regime were analyzed, and two mechanisms of transport improvement were characterized. A significant reduction of ion heat transport in the core of both deuterium and hydrogen plasmas was observed, indicating ion ITB formation. The dependence of the ion heat diffusivity on temperature ratio (Te/Ti) and normalized Ti-gradient (R/LTi = −(R/Ti)(dTi/dr)) was investigated in the core region, in which gyrokinetic simulations with the GKV code predict the destabilization of ion temperature gradient (ITG) modes. The Te/Ti dependence shows ITG-like property, while a significant deviation from the ITG-like property is found in the R/ dependence, indicating suppression of the ITG mode in the large R/ regime and resultant ion ITB formation. In the comparison between deuterium plasma and hydrogen plasma, the lower transport in the deuterium plasma is observed in both ion and electron heat diffusivities, indicating a significant isotope effect. It was found with the nonlinear turbulent transport simulation with GKV that the zonal flow enhancement contributes to the ITG suppression in the deuterium plasma. | |||||
書誌情報 |
Nuclear Fusion 巻 59, 号 10, p. 106002, 発行日 2019-08-13 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00295515 | |||||
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 | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/1741-4326/ab2d02 | |||||
権利 | ||||||
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 doi.org/10.1088/1741-4326/ab2d02. | |||||
情報源 | ||||||
関連名称 | K. Nagaoka et al 2019 Nucl. Fusion 59 106002 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ab2d02 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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