THE MIRROR AND ION-CYCLOTRON ANISOTROPY INSTABILITIES

被引:212
作者
GARY, SP
机构
关键词
D O I
10.1029/92JA00299
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The linear dispersion equation for fully electromagnetic waves and instabilities at arbitrary directions of propagation relative to a background magnetic field B(o) in a homogeneous Vlasov plasma is solved numerically for bi-Maxwellian particle distribution. For isotropic plasmas the dispersion and damping of the three modes below the proton cyclotron frequency are studied as functions of beta(i) and T(e)/T(i). The transport ratios of helicity, cross-helicity, Alfven ratio, compressibility, and parallel compressibility are defined. Under the condition that the proton temperature perpendicular to B(o) is greater than the parallel temperature, the growth rates and transport ratios of the mirror instability and the ion cyclotron anisotropy instability are examined and compared. Both the proton parallel compressibility and the proton Alfven ratio are significantly different for the two growing modes.
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页码:8519 / 8529
页数:11
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