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本文阐述了由分析色散关系几何性质的方法,导出速度分布各向异性的等离子体中的电磁波不稳定性的严格和普适的判据,具体讨论了温度不均匀性和粒子束流对不稳定性的影响。最后导出了Weibel的电磁波增长系数的相对论修正公式。In this paper, a strict and general instability criterion is obtained by analysing the geometric properties of the dispersion relation of electromagnetic waves in plasma with anisotropic velocity distribution. The criterion is applied to the cases of anisotropic temperature and current-carrying plasma. Finally, the relativistic correction of Weibel's formula is obtained.
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