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Parameter dependence of two-fluid and finite Larmor radius effects on the Rayleigh-Taylor instability in finite beta plasmas
http://hdl.handle.net/10655/00012699
http://hdl.handle.net/10655/00012699eb47988a-447f-4f1a-8bac-b713258a3020
名前 / ファイル | ライセンス | アクション |
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Phys.Plasmas23_122123 (3.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-14 | |||||
タイトル | ||||||
タイトル | Parameter dependence of two-fluid and finite Larmor radius effects on the Rayleigh-Taylor instability in finite beta plasmas | |||||
言語 | ||||||
言語 | eng | |||||
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 |
ITO, Atsushi
× ITO, Atsushi× MIURA, Hideaki |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0001-8999-1784 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The parameter dependence of two-fluid and finite Larmor radius (FLR) effects on the Rayleigh-Taylor (RT) instability in finite beta plasmas is examined based on extended magnetohydrodynamic (MHD) models. Four MHD models, the MHD model, two-fluid MHD model, MHD model with FLR effects, and two-fluid MHD model with FLR effects, are compared with each other with local and eigenmode analyses. For equilibria with nonuniform magnetic fields, the absence of complete stabilization of large wavenumber modes due to the FLR effect [Zhu et al., Phys. Rev. Lett. 101, 085005 (2008)] occurs for beta lower than the critical value for a small pressure gradient. For the two-fluid MHD model with the FLR term, it is shown that the absence of complete stabilization occurs for the beta different from that for the MHD model with the FLR term, the mode is not always most stable among those for the other models, depending on beta, and the coupling between RT mode and electron drift wave appears. The spatial dependence of the local analysis is examined in comparison with that of eigenfunctions. For the case of MHD with the FLR term, for large wavenumber modes, the growth rate of the eigenmode is larger than that of the local analysis at the center. In that case, the eigenfunction has two humps in the regions that are still unstable while the RT mode is completely stabilized at the center in the local analysis. | |||||
書誌情報 |
Physics of Plasmas 巻 23, p. 122123, 発行日 2016-12-27 |
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出版者 | ||||||
出版者 | AIP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1070664X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10987555 | |||||
権利 | ||||||
権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Physics of Plasmas 23, 122123 (2016) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.4972819.. | |||||
情報源 | ||||||
関連名称 | Physics of Plasmas 23, 122123 (2016); https://doi.org/10.1063/1.4972819 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4972819 | |||||
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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