Stability of Alfven modes in a collisionless anisotropic plasma confined by a highly curved magnetic field

被引：2

作者：

Grigor'ev, I. A. ^{[1
]}

Pastukhov, V. P. ^{[1
]}

机构：

[1] IV Kurchatov Atom Energy Inst, Russian Res Ctr, Moscow 123182, Russia

来源：

PLASMA PHYSICS REPORTS | 2008年 / 34卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063780X08040028

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The stability of Alfven modes in a collisionless plasma with an anisotropic pressure in a highly curved magnetic field is studied. A linearized equation for describing longitudinally nonuniform MHD perturbations with frequencies below the bounce frequency is derived. In this equation, the perturbations of longitudinal and transverse pressures are calculated using a collisionless kinetic equation. It is shown that longitudinal fluxes of the transverse and longitudinal plasma energies give rise to pressure perturbations different from those in the Chew-Goldberger-Low collisionless hydrodynamics. The corresponding energy principle is constructed. A stability criterion for Alfven modes is obtained and is found to be more stringent than that in the Chew-Gold-berger-Low model.

引用

页码：265 / 277

页数：13

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