Prebreakdown processes in water with screened electrodes and possibility of pulse electrical strength increase

Summary form only given. Prebreakdown processes in water with modified electrodes were studied by optical and electrooptical methods. In our opinion pulse electric strength could be increased by influence on the stage of streamer initiation only. Conductive layers near electrodes are the way of action on streamer emergence. In this paper layers were prepared by using special electrodes. Nonelectrode and postbreakdown streamers are registered. Macroscopic and microscopic electric fields close to anode and cathode breakdown channel are measured. Macroscopic fields differs one from other: field close to cathode directed streamer has value 300 kV/cm, field close to anode directed streamer has value 2 MV/cm, approximately. The microscopic fields are 10 MV/cm approximately.