Investigation into the processes of plasma production on the surface of electrodes made from different materials on Angara-5-1

The results of an experimental research of formation of plasma on irradiated by soft x-ray radiation electrodes from lead and stainless steel at linear density of a current about 1MA/cm at Angara-5-1 facility are presented. It is shown, at the specified density of a current and soft X-ray power density of 0.1 TW/cm2 plasma appears on a surface of electrodes. The velocity of plasma expansion reaches 50-100 km/s. Presence of soft X-ray radiation essentially changes dynamics of expansion of plasma in an interelectrode gap. Distinctions in dynamics of behaviour of plasma on electrodes from stainless steel and from lead are found.