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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Parallel electric fields in nonlinear magnetosonic waves in an electron-positron-ion plasma

http://hdl.handle.net/2237/12010
a7ca0c37-aa56-4c6d-ae14-a96873b7feb1
名前 / ファイル ライセンス アクション
PhysPlasmas_15_082309.pdf PhysPlasmas_15_082309.pdf (312.5 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2009-08-03
タイトル
タイトル Parallel electric fields in nonlinear magnetosonic waves in an electron-positron-ion plasma
著者 Takahashi, Seiichi

× Takahashi, Seiichi

WEKO 30847

Takahashi, Seiichi

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Sato, Masatoshi

× Sato, Masatoshi

WEKO 30848

Sato, Masatoshi

Search repository
Ohsawa, Yukiharu

× Ohsawa, Yukiharu

WEKO 30849

Ohsawa, Yukiharu

Search repository
権利
権利情報 Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
抄録
内容記述 The electric field E_|| along the magnetic field B in nonlinear magnetosonic waves in a
three-component plasma is studied with theory based on a three-fluid model and with fully kinetic, electromagnetic, particle simulations. The theory for small-amplitude (epsilon<<1) pulses shows that the integral of E_|| along B, F=−[integral]E_||ds, is proportional to epsilon(pe0−pp0) in warm plasmas, where p_e0 and p_p0 are, respectively, the electron and positron pressures, and proportional to
epsilon2miv<sub>A</sub><sup>2</sup>/(1+v<sub>A</sub><sup>2</sup>/c2)3 in cold
plasmas, where v_A is the Alfvén speed. These predictions are verified with simulations. Furthermore, for shock waves with epsilon~O(1), simulation values are consistent with the phenomenological relation
n_e0eF~epsilon(rhov<sub>A</sub><sup>2</sup>+Gammaepe0)(ni0/ne0), where rho is the mass density and Gamma_e is the specific heat ratio. These results indicate that E_|| can be strong in strong magnetic fields.
内容記述タイプ Abstract
出版者
出版者 American Institite of Physics
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
ISSN
収録物識別子タイプ ISSN
収録物識別子 1070-664X
書誌情報 PHYSICS OF PLASMAS

巻 15, 号 8, p. 082309-082309, 発行日 2008-08-15
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://dx.doi.org/10.1063/1.2972159
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/12010
識別子タイプ HDL
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