High-frequency electron drift instability in the cross-field configuration of Hall thrusters
High-frequency electron drift instability in the cross-field configuration of Hall thrusters
复制标题
DOI：
10.1063/1.2359718
复制
发表时间：
2006-10
影响因子：
2.2
通讯作者：
A. Ducrocq;J. Adam;A. Héron;G. Laval
中科院分区：
文献类型：
--
作者：
A. Ducrocq;J. Adam;A. Héron;G. Laval
对高频电子漂移不稳定性进行了系统的研究。它有非常大的波数，对应于靠近电子回转半径的波长。对于霍尔推力器中存在的交叉电场和磁场结构模型，推导了三维色散关系。结果表明，这种不稳定性是以垂直于磁场的斜不稳定性模包的形式发展的。对于在粒子模拟中得到的扭曲的电子分布函数，我们也研究了不稳定性的演化。
A systematic study of a high-frequency electron drift instability is presented. It has very large wave numbers corresponding to wavelengths close to the electron gyroradius. The three-dimensional dispersion relation is derived for a model of a crossed electric and magnetic field configuration existing in the Hall thruster. It is shown that the instability develops in packets of oblique unstable modes perpendicular to the magnetic field. The evolution of the instability is also studied for distorted electron distribution functions obtained in particle-in-cell simulations.