MHD ballooning stability of a sheared plasma sheet

被引：24
|
作者：
Hurricane, OA
机构：
[1] Department of Physics, University of California, Los Angeles
[2] Department of Physics, University of California at Los Angeles, Los Angeles, CA 90095-1547
来源：
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 1997年 / 102卷 / A9期
关键词：
D O I：
10.1029/97JA01595
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A three magnetic field component sheared plasma sheet equilibrium model is developed in the context of ideal magnetohydrodynamics (MHD). It is argued that MHD stability theory may be sufficiently correct for a thin sheet if the shear in the magnetic field is large enough. Using the model magnetic field, the ballooning eigenvalue equation is solved for several different values of equilibrium parameters. It is shown that for sufficiently large values of the shear parameter, the model is unstable to symmetric ballooning modes with a growth rate on the order of one tenth the Alfven rate.
引用
收藏
页码：19903 / 19911
页数：9
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