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Linear MHD analyses of locked-mode-like instabilities in LHD
http://hdl.handle.net/10655/00012799
http://hdl.handle.net/10655/000127994b483604-c3a9-4617-935e-190448e5afbf
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion61_pp046005 (492.3 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-21 | |||||
タイトル | ||||||
タイトル | Linear MHD analyses of locked-mode-like instabilities in LHD | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | locked-model-like instability | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | helical plasma | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | linear analysis | |||||
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 |
Okamoto, M.
× Okamoto, M.× Tomita, H.× WATANABE, Kiyomasa× SATO, Masahiko× TAKEMURA, Yuki× SAKAKIBARA, Satoru× IDA, Katsumi× YOSHINUMA, Mikiro× LHD, Experiment Group |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To investigate the driving mechanism of the locked-mode-like instability observed in the large helical device, we reconstruct the magnetohydrodynamic (MHD) equilibria consistent with the measurement and identify a dominant MHD instability in the precursor phase based on linear MHD analyses. From the dependence of the linear growth rate on the magnetic Reynolds number, the radial mode structure of the electrostatic potential fluctuation and other indices, the ideal interchange mode is found to be dominant. Moreover, it is found that the Mercier parameter, DI, becomes much larger than 0.3 during the phase, while the precursor has constant frequency and fluctuation amplitude. Therefore, DI ≫ 0.3 is a good index of the on-set condition of the minor collapse itself. It is also found that the achievement of DI ≫ 0.3 is due to the movement of the resonant surface to the inner plasma region, which corresponds to the larger pressure gradient region. | |||||
書誌情報 |
Nuclear Fusion 巻 61, 号 4, p. 046005, 発行日 2021-03-05 |
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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/abd7ba | |||||
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 https://doi.org/10.1088/1741-4326/abd7ba. | |||||
情報源 | ||||||
関連名称 | Citation M. Okamoto et al 2021 Nucl. Fusion 61 046005 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/abd7ba | |||||
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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