Mass jet distribution in gas spark gaps under microsecond 100kA current pulse

The experiment of mass jet distribution in gas spark gaps was carried out under microsecond hundred-kiloampere current pulse. Four kinds of electrode materials were studied in experiment. The results show that the direction of mass jet is independent of electrode material and normal to the electrode surface at the arc spot. The angle of divergence is about 12°and the mass distribution of jet is approximate to cos nφ(n≈1 400).