Plasma focus-anode contact zone chronography

Summary form only given, as follows. The plasma focus discharge anode is a high power source of X-ray radiation (XR) due to bremsstrahlung of electron fluxes in a MegaAmpere range. At an energy level exceeding 10**13 W/cm**2 an explosive contact zone (CZ) evaporation resulting in the emergence of high pressure, accompanied by spall formation takes place. In the numerical experiment it has been shown that for explaining the experimentally-observed spalling parameters in a thin (/spl sim/1 mm) anode plate one can assume the hypothesis about the CZ-expansion in time. In the paper an experiment on the X-ray radiation CZ-chronography with a speedy photoregistrator SPER6, and with an air S-ray radiation converter is represented. The results show that the CZ, in various discharges, is expanded with velocities close to those which rise with an increase in the X-ray radiation intensity. The size of expansion zones is essentially greater than that found due to the anode surface heating, not taking into account the photon radiation of the pinch.