Explosive Processes on Cathode while Forming Nanosecond Pulsed Discharge of High Pressure

Abstract

The paper is devoted to research of cathode surfaces with different curvature radius (r = 1–8 mm) while forming nanosecond pulsed discharge in dense air. Influence of field and air pressure heterogeneity rate in gas gap on size of micro-craters being formed on working cathode surface after pulsed effect has been shown in the paper. The paper reveals a maximum expansion of separate micro-crater size on cathode surface with small curvature radius.