On possibility of high pressure generation using impacting liners driven by disk EMG

Summary form only given. Generation of /spl sim/10 MBar pressures in cylindrical targets /spl sim/1 cm in radius would provide unique possibilities for studying material properties in extreme conditions for various research and application purposes. The paper presents results of theoretical and computational studies demonstrating the possibilities. It is shown that 1-meter and 0.4-meter-diameter multi-module disk EMG developed by VNIIEF can provide both directly and with electrically exploded opening switch required acceleration of solid impacting liners, for example, two-layered liners made of aluminum (outside) and molybdenum (inside), up to /spl sim/15 km/s velocities. Radii of the impacting liners optimal for energy sources considered range from /spl sim/8 cm to /spl sim/4 cm for targets of 1cm radius. The paper gives results of 2D MHD computations for implosion of the liners with taking into account end current-carrying elements, according to which 2D effects of the cylindrical liner interaction with the end elements may not lead to considerable disruptions of the desired 1D pattern of the liner impact onto the target. Two liner experiment types with 0.4-meter-diameter DEMG are proposed leaning on the VNIIEF research results, in particular, on Russian-American experiments HEL-1 (1996) and ALT-1 (1999).