Abstract

The electrodynamic structure of an anomalous glow discharge between two plane electrodes located on the surface of a sharp plate in supersonic flow of molecular nitrogen is studied numerically in a wide range of Mach numbers using a modified ambipolar model of quasi-neutral electric-discharge plasma. The ambipolar diffusion coefficient and the effective ionization rate are modified while taking into account the external magnetic field. The problem is solved in the two-dimensional x–y formulation, when the external magnetic field strength is directed in the positive or negative direction of the z axis. The parameters of anomalous glow discharge are numerically studied in the pressure range p = 0.14–5 Torr and the voltage drops on the quasineutral current column of discharge plasma V = 30–320 V. The main problem parameters which make it possible to obtain a reasonable agreement with the available experimental data are determined.

中文翻译：

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超音速流通过磁场中表面异常辉光放电的锋利板

摘要

使用改进的准中性放电等离子体双极模型，在宽马赫数范围内对位于尖板表面的两个平面电极之间的异常辉光放电的电动结构进行了数值研究。在考虑外部磁场的同时修改双极扩散系数和有效电离率。当外部磁场强度指向z轴的正方向或负方向时，该问题在二维x-y公式中得到解决。对压力范围p = 0.14–5 Torr 和放电等离子体准中性电流柱上的电压降V = 30–320 V 下的反常辉光放电参数进行了数值研究。确定与可用实验数据的一致性。