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在有弱相对论性电子时,在电子迴旋频率Ωe附近存在快x模的不稳定性。从这一事实出发,我们用准线性理论分析了具有粒子数倒转的分布函数引起的不稳定性最后达到饱和的物理机制。进行了一些近似的计算,求出了电磁迴旋不稳定性的饱和时间和饱和能量及垂直、平行分布函数随时间的演化过程。发现用此理论算出的饱和能级与观察到的AKR结果是一致的。We consider the nonlinear saturation of a fast x mode instability near the electron cyclotron frequency due to electron population inversion. A quasilinear theory is discussed. The corresponding saturation time, amplitudes as well as the temporal evolution of the electron distribution functions are also studied.
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中国物理学会期刊
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