Nonlinear Alfvén waves in a finite-beta plasma
Nonlinear Alfvén waves in a finite-beta plasma
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有限 β 等离子体中的非线性阿尔文波
DOI：
10.1017/s0022377800013295
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发表时间：
1988
影响因子：
2.5
通讯作者：
J. Wyller
中科院分区：
文献类型：
--
作者：
E. Mjølhus;J. Wyller
用约化摄动法将平行非线性弱色散MHD波的DNLS方程推广到有限的Beta值和三维空间。通过Grad(1961)的混合流体和动力学引导中心模型考虑了动力学效应。由此得到的方程包含一个表示共振粒子效应的非线性和非局域项。
The DNLS equation for parallel nonlinear and weakly dispersive MHD waves is extended to finite beta values as well as to three spatial dimensions, by means of the reductive perturbation method. Kinetic effects are included by means of the hybrid fluid and kinetic guiding-centre model of Grad (1961). The resulting equation contains a nonlinear and non-local term representing the effect of resonant particles.