Prediction of double shock formation by exploding high gain ICF target in Xe gas filled chamber

The spherical micro-explosion of a 132 MJ high gain indirect drive target radiating and expanding into a surrounding 6$\mu$g/cc Xe atmosphere is simulated in 1D using the BUCKY radiation hydrodynamics code with 121 group FAC Xe opacities and equations of state.\footnote{Private communications with Howard Scott, LLNL.} An interesting double shock is formed by the Marshak wave and exploding target debris. Explanation of this double shock formation is presented. This research is supported by Lawrence Livermore National Laboratory.