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Two-Dimensional Model of the Penning Discharge in a Cylindrical Chamber with the Axial Magnetic Field

机译:轴向磁场圆柱形腔室粘合放电的二维模型

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摘要

The drift-diffusion model of a Penning discharge in molecular hydrogen under pressures of about 1 Torr with regard to the external electric circuit has been proposed. A two-dimensional axially symmetric discharge geometry with a cylindrical anode and flat cathodes perpendicular to the symmetry axis has been investigated. An external magnetic field of about 0.1 T is applied in the axial direction. Using the developed drift-diffusion model, the electrodynamic structure of a Penning discharge in the pressure range of 0.5-5 Torr at a current source voltage of 200-500 V is numerically simulated. The evolution of the discharge electrodynamic structure upon pressure variations in zero magnetic field (the classical glow discharge mode) and in the axial magnetic field (Penning discharge) has been studied using numerical experiments. The theoretical predictions of the existence of an averaged electron and ion motion in a Penning discharge both in the axial and radial directions and in the azimuthal direction have been confirmed by the calculations.
机译:已经提出了在约1托在约1托的关于外部电路的压力下在分子氢的漂移扩散模型。研究了具有圆柱形阳极和垂直于对称轴的扁平阴极的二维轴向对称的几何形状。在轴向上施加约0.1t的外部磁场。使用开发的漂移扩散模型,在数值模拟200-500V的电流源电压下在0.5-5托的压力范围内的接收放电的电动力结构。使用数值实验研究了零磁场(典型辉光放电模式)和轴向磁场(锐磁场)中的压力变化时放电电动力结构的演变。通过计算,在轴向和径向方向上和方位角方向上的穿笔放电中的平均电子和离子运动的理论预测已经得到了计算。

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  • 来源
    《Technical physics》 |2017年第8期|共12页
  • 作者

    Surzhikov S. T.;

  • 作者单位

    Russian Acad Sci Ishlinskii Inst Problems Mech Moscow 119526 Russia;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 Tb13;
  • 关键词

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