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Two-fluid tearing mode instability in cylindrical geometry
http://hdl.handle.net/10655/00012700
http://hdl.handle.net/10655/0001270093ffdf9e-291b-4b8a-a3e8-9bcb83623140
名前 / ファイル | ライセンス | アクション |
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Phys.Plasmas24_072102 (3.1 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 | Two-fluid tearing mode instability in cylindrical geometry | |||||
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× RAMOS, Jesus J. |
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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 | This paper investigates the linear stability of a force-free equilibrium in a plasma cylinder of finite aspect ratio, against the two-fluid resistive tearing mode. An analytic dispersion relation is derived by extending to cylindrical geometry the slab geometry boundary layer theory applicable to two-fluid tearing modes for high beta and general ion skin depths [E. Ahedo and J. J. Ramos, Plasma Phys. Controlled Fusion 51, 055018 (2009)]. The cylindrical dispersion relation shows the dependence of the mode growth rate and real frequency on the ion skin depth, through different regimes that range from the single-fluid MHD limit to the electron MHD limit. It also shows that the non-zero real frequency of the mode arises due to the combination of two-fluid and cylindrical effects. A numerical solution of the complete set of normal-mode equations that resolves the fine-scale singular layer is carried out, for a wide range of resistivity and ion skin depth values. The numerically obtained eigenvalues agree very well with the analytic dispersion relation and the agreement improves the smaller the resistivity and the larger the ion skin depth are. Comparison between the numerical eigenfunctions and the inner solutions of the boundary layer theory shows that the eigenfunctions develop imaginary parts within the resonant layer, also due to the combination of two-fluid and cylindrical effects. | |||||
書誌情報 |
Physics of Plasmas 巻 24, p. 072102, 発行日 2017-06-27 |
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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 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1063/1.4986116 | |||||
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 24, 072102 (2017) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.4986116. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4986116 | |||||
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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