Double-hole anode glow discharge in axial magnetic field at low pressures

Abstract

The influence of magnetic field on glow plasma was studied by the self-designed double-hole anode discharge device, and the relationship between ignition voltage and gas pressure under different magnetic fields is obtained. In addition, the influence of magnetic field on the spatial distribution of plasma density is studied by changing different magnetic field configurations. The results show that under the same pressure, the magnetic field can effectively reduce the glow discharge ignition voltage and increase the plasma density; the enhancement of magnetic field is similar to the increase in air pressure in the double-hole anode glow discharge structure; the hole anode and magnetic field are indispensable conditions for glow generation at low pressure; and different magnetic field configurations control the plasma density distribution.