INVESTIGATION OF VAPORIZATION ON METALLIC TARGETS IRRADIATED BY PULSE LASER BEAMS

The vaporizalon characteristic and the vapor cval ution process of metallic targets irradiated by pulse laser beams were investigated by high speed schlieren diagonstic technique in this paper.The temperature of condensed phase transition, the front velocity of vapor plume and velocity of precursor shock wave in air of LYI2 aluminum targets were measured experimentally with different incident laser flux, and the temperature on the surface of condensed phase transition as a function of incident laser flux was obtained by approximatically analysis vaporization model.