Alfven-wave instability of current sheets in force-free collisionless plasmas

被引：17

作者：

Bellan, PM ^{[1
]}

机构：

[1] CALTECH, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.83.4768

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

If the current sheet between adjacent twisted magnetic flux tubes is sufficiently thin, the electron flow velocity becomes comparable to the Alfven velocity and can destabilize collisionless Alfven waves. The threshold for instability in force-free plasmas is calculated for both inertial and kinetic Alfven-wave regimes. When there is strong magnetic shear, unstable kinetic Alfven waves can resonantly accelerate ions to energies much higher than the electron temperature.

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页码：4768 / 4771

页数：4

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