Creation of high‐energy electron tails by means of the modified two‐stream instability
Creation of high‐energy electron tails by means of the modified two‐stream instability
复制标题
通过改进的双流不稳定性产生高能电子尾
DOI：
10.1063/1.864368
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
K. Papadopoulos
中科院分区：
文献类型：
--
作者：
Motohiko Tanaka;K. Papadopoulos
修正两流不稳定性的粒子模拟表明，当相对漂移速度vd低于临界速度Vc时，电子加速而不是大量加热。观察到一个非常有趣的非线性自共振加速过程，它使电子的加速度远远超过线性不稳定模式的相速度。给出了预测Vc值和加速电子数密度的简单准则。
Particle simulations of the modified two‐stream instability demonstrate strong electron acceleration rather than bulk heating when the relative drift speed vd is below a critical speed Vc. A very interesting nonlinear autoresonance acceleration process is observed which accelerates the electrons much above the phase speed of the linearly unstable modes. Simple criteria are presented that predict the value of Vc and the number density of the accelerated electrons.