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Magnetic electron drift solitons in electron magnetohydrodynamic plasmas

Samiran Ghosh, Nikhil Chakrabarti2013年Plasma Physics and Controlled FusionIF 2.2出版社

The finite amplitude nonlinear evolution of magnetic electron drift wave (MEDW) in collisionless electron magnetohydrodynamic plasmas is investigated. The dynamics of the nonlinear MEDW is shown to be governed by a Korteweg–de Vries–Zakharov–Kuztensov (KdV–ZK) equation in two dimensions which exhibits a soliton solution. The multi-dimensional stability using the small -k expansion yields that the magnetic electron drift solitary waves are unstable with respect to the perturbation in the transverse direction.

日本語訳

無衝突電子磁気流体プラズマにおける磁気電子ドリフト波(MEDW)の有限振幅非線形発展を調査する。非線形MEDWのダイナミクスは、ソリトン解を示す二次元のKorteweg–de Vries–Zakharov–Kuztensov(KdV–ZK)方程式によって支配されることが示される。小さな-k展開を用いた多次元安定性解析により、磁気電子ドリフト孤立波は横方向の摂動に対して不安定であることが示される。

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Magnetohydrodynamics
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