Nonelectrode and postbreakdown ionization processes in water with screened electrodes

Summary form only given. Space charges that determine spatial distribution and magnitude of local electric fields play an important role in different fields of science. Here we show the results of optical and electrooptical studies of nonelectrode and postbreakdown ionization processes in near-electrode space charge layers inside water. The space charges were created with the help of membrane electrodes. The nonelectrode streamers develop in the form of cathode and anode semistreamers initiated at the same point. Postbreakdown streamers are registered near main breakdown channel. The second type of postbreakdown streamers initiated at the cathode. Both streamers are spreaded through the nearly whole negative space charge region.