在静电磁流体方程基础上，提出了柱状放电电弧等离子体磁螺旋不稳定性的一种新的线性分析方法。
A new linear analysis for magnetic helical instabilities of arc discharges in a cylindrical plasma is developed based on a set of electrostatic magnetohydrodynamic equations.
本文采用与时间有关的线性微扰理论，分别讨论了旋转气流、纵向气流的作用，以及它们共同的作用下电弧螺旋不稳定性的特征。
The linear time perturbation theory is used in this paper, the effects of rotary flow, axial flow and both of them to the arc stability are discussed respectively.
讨论了具有抛物线形电流分布的电弧等离子体柱在磁场中的不稳定性问题。
The helical instability problem of an arc plasma column with a parabolic current profile in a magnetic field is discussed.
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