On the physical nature of apokampic discharge

摘要: Experimental and theoretical investigations of a diffuse jet (streamer) apokampic discharge are carried out for various values air pressure. It is established experimentally that this regime pulse-periodic formed stage by stage. At the first stage, in microsecond voltage pulse positive polarity, potential spark channel during pulses between two needle electrodes transformed into channel. second weakly glowing halo near channel, bright offshoot arises bending point. Finally, at third steadystate mode, frequencies few to tens kilohertz each pulse, becomes source plasma bullets (streamers) moving with velocity up 200 km/s. As result simulation streamer atmospheric pressure under conditions corresponding experimental data, propagation 400 km/s obtained streamer. shown formation significantly depends on temperature.