Instabilities in a Magnetoplasma with Skin Current
Instabilities in a Magnetoplasma with Skin Current
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磁等离子体与皮肤电流的不稳定性
DOI：
10.1103/physrevlett.27.1637
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发表时间：
1971
影响因子：
8.6
通讯作者：
Chuan
中科院分区：
文献类型：
--
作者：
Chuan
分析了具有表面电流的磁化等离子体的稳定性，其特征是电流和电子温度的不均匀性，其扰动频率和增长率高于离子陀螺频率。新的不稳定性，由于电子温度梯度被发现在离子和电子声学分支，重要的实验与湍流加热。在实验中观察到的离子声不稳定性导致玻姆样湍流热导率。线性和非线性的理论计算结果与实验结果符合得很好。
Stability of a magnetized plasma with skin current, characterized by nonuniformity of the current and the electron temperature, is analyzed for perturbations with frequency and growth rate higher than the ion gyrofrequency. New instabilities due to the electron temperature gradient are found in both ion and electron acoustic branches, important for experiments with turbulent heating. The ion-acoustic instability observed in experiments leads to a Bohm-like turbulent thermal conductivity. The theoretical results, both linear and nonlinear, agree well with experiment.