|Observations of laser driven supercritical radiative shock precursors
|S. Bouquet, C. Stehlé., M. Koenig, J.-P. Chièze, A. Benuzzi-Mounaix, D. Batani, S. Leygnac, X. Fleury, H. Merdji, C. Michaut, F. Thais, N. Grandjouan, T. Hall, E.°Henry, V. Malka, and J.-P. J. Lafon
We present the set-up and the results of a supercritical radiative shock experiment performed with the LULI nanosecond laser facility. Using specific designed targets (small cells with a volume about 1 mm3) filled with xenon gaz at low pressure (lower than 1 atm), the propagation of a strong shock with a radiative precursor is evidenced. The main measured quantities related to the shock (electronic density and propagation velocity) are shown to be in good agreement with the results obtained from theory and various numerical simulations.