Registration of Multiple Spalls and Structures of Ejected Particle Clouds

Experimental results on the study of spallation and cavitation from solid (Cu and Pb) and liquefied Pb are presented. Pb ejecta transporting in air is also studied with a multi-probe laser interferometry method that is applied to detect and quantify the particle cloud velocity and surface fragmentation. The laser diagnostic is designed to probe ejecta velocity- and dispersion-profiles within ejecta fragment clouds, and spallation structures.