Material failure and inertial instabilities in a shocked and imploded cylindrical aluminum sample

Summary form only given. We have used the LANL PEGASUS Z-pinch facility to drive a thin cylindrically-convergent Al liner to /spl sim/3 km/s to launch /spl sim/30 GPa shocks in a 3-mm thick 10-mm-i.d. aluminum cylinder whose interior is filled with 1 atm Xe gas. The subsequent material motion of the metal and gas is diagnosed with both radial and axial flash X-rays and with optical framing cameras Instabilities are seeded by implanting wires of assorted higher density metal parallel to the cylinder axis. We have done two shots, varying the target from Al 1100-O to Al 6061-T6 to explore the effect of changing material strength. The images show the spallation failure of the metal-gas interface on shock release and the effect of the seeded instabilities.