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Spontaneous focusing of plasma flow in a weak perpendicular magnetic field
http://hdl.handle.net/10655/00013612
http://hdl.handle.net/10655/000136124195d6b1-e2f8-415f-80ba-8ced069fb029
名前 / ファイル | ライセンス | アクション |
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13829_Phys.Plasmas (3.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2023-05-26 | |||||
タイトル | ||||||
タイトル | Spontaneous focusing of plasma flow in a weak perpendicular magnetic field | |||||
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 |
MORITAKA, Toseo
× MORITAKA, Toseo× KURAMITSU, Yasuhiro× LIU, Yao-Li× CHEN, Shih-Hung |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0003-2513-0453 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Structure formation of high-beta plasma flow in a perpendicular magnetic field is investigated in the ion kinetic regime by a fully kinetic particle-in-cell simulation. We demonstrate that directional plasma flow is spontaneously focused to form a sharp density structure. The primary focusing process comes from field-aligned electron inflow associated with the whistler mode and plasma confinement due to a self-generated magnetic field. The resulting concave magnetic field lines modulate ion gyration to cause a secondary focusing process with significant plasma concentration. Required conditions for these processes are determined by a dimensionless parameter α ≡ βi0(ΔW/ρi0), where βi0, ΔW, and ρi0 denote the plasma kinetic beta, window size, and ion gyration radius, respectively. The focusing process is apparent for small α, whereas diamagnetic expansion is dominant for large α. This condition describes a transition between diamagnetic cavity formation and the focusing process. | |||||
書誌情報 |
Physics of Plasmas 巻 23, 号 3, p. 032110, 発行日 2016-03-10 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1070-664X | |||||
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 | https://doi.org/10.1063/1.4942028 | |||||
権利 | ||||||
権利情報 | This article may be downloaded for personal use only. | |||||
権利 | ||||||
権利情報 | Any other use requires prior permission of the author and AIP Publishing. | |||||
権利 | ||||||
権利情報 | This article appeared in Physics of Plasmas 23, 032110 (2016) and may be found at https://doi.org/10.1063/1.4942028 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4942028 | |||||
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 | ||||||
13829 |