Study Waves through the Production and Development Electrical Discharge Pulse Size of Helium at Atmospheric Pressure


The transition of a diffuse volume discharge in a centimeter long gap into a high current diffuse mode, when the gas pressure increased from 1 to 5 atm and the applied voltage rose from the statistical breakdown voltage to a 100% over voltage was investigated in atmospheric pressure for helium were studied by analyzing the emission spectra of the cathode plasma and the spatiotemporal behavior of the plasma glow.. Analytical expressions for the radius of the cathode spot and its expansion velocity obtained in the framework of a spherically symmetric model agree satisfactorily with the experimental data.