中文摘要：

利用Xoopic软件,采用有限时域差分法（FDTD）和YEE网格法,对等离子体通导脉冲电流的工作过程进行了数值模拟,特别侧重于分析通导系统内气体压强对电离所产生的等离子体浓度的影响、以及施加于系统的磁场对气体放电区域的控制作用,得出了通过压强的控制可以对系统放电状态进行有效的调整的结论,并获得了外加磁场大小的最佳取值,同时得到了为减小阴极溅射,对磁场合理设置的定性范围。

英文摘要：

In order to design a plasma device with pulse current conduction,FDTD and YEE mesh method are used,with Xoopic software,for numerical simulation on the active process of the switch device designed at incipient stage.It is laid particular emphasis on the analysis that the density of plasma generated by ionization which are influenced by gas pressure in the device,and the region of gas discharge controlled by the magnetic field which is applied on the device.There is a conclusion that the discharge state of the device can be effective adjusted by changing gas pressure in the device.In the meanwhile,with a necessary theoretical analysis for reducing cathode sputtering,the qualitative range of the magnetic field is ascertained elementarily.