Parametric instabilities of parallel-propagating Alfven waves: Kinetic effects in the MHD-model

被引：33

作者：

Araneda, JA ^{[1
]}

机构：

[1] Max Planck Inst Aeron, D-37189 Katlenberg, Germany

[2] Univ Concepcion, Dept Fis, Concepcion, Chile

来源：

PHYSICA SCRIPTA | 1998年 / T75卷

关键词：

D O I：

10.1238/Physica.Topical.075a00164

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Parametric instabilities of circularly polarized Alfven waves propagating along a background magnetic field are investigated by means of a fluid/ kinetic approach and particle simulations. It is found that, in addition to the collisionless effects on the decay instability as described by a drift-kinetic treatment [Inhester, B., J. Geophys. Res. 95, 10525 (1990)], ion kinetics leads to instabilities that are absent in the fluid description. A brief comparison of our theoretical results with computer simulations is presented.

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页码：164 / 168

页数：5

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