ELECTROSTATIC INSTABILITIES IN A PLASMA WITH ANISOTROPIC VELOCITY DISTRIBUTION

ELECTROSTATIC INSTABILITIES IN A PLASMA WITH ANISOTROPIC VELOCITY DISTRIBUTION
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具有各向异性速度分布的等离子体中的静电不稳定性

DOI:
10.1103/physrev.139.a1115
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发表时间:
1965
期刊:
影响因子:
--
通讯作者:
L. S. Hall
L. S. Hall
中科院分区:
--
文献类型:
--
作者:
Y. Shima;L. S. Hall

文献摘要

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一个各向异性磁化等离子体,其中粒子速度的分布是一个双麦克斯韦特征的温度T和T II,被认为是为了尽可能多地划定的位置可能不稳定的根源的色散方程。我们发现色散方程的边缘不稳定根只有在[l+ 1 2]< ω<[l+ 1−(T II T)]和ω<(T − T II)T II时才能出现,其中l是整数,ω是以回旋频率为单位的频率的真实的部分。因此,特别地,如果T < 2 T II,则系统是稳定的。
An anisotropic magnetized plasma, in which the distribution of particle velocities is a bi-Maxwellian characterized by the temperatures T⊥ and T II, is considered in order to delimit as much as possible the location of possibly unstable roots to the dispersion equation. We find that marginally unstable roots of the dispersion equation can occur only if both [l+ 1 2]< ω<[l+ 1−(T II T⊥)] and ω<(T⊥− T II) T II, where l is an integer and ω is the real part of the frequency in units of the cyclotron frequency. Thus, in particular, the system is stable if T⊥< 2 T II.