Experimental measurement of indirectly driven shock waves with laser

On the Shenguang-Ⅱ high power laser facility, temporal- and spatial-resolved experimental records of light emitting from heating luminescence at the rear surface of step samples were obtained by an optical streak camera. The velocity and planarity of the shock wave were measured. The radiation temperature measured by soft X-ray spectrometer was consistent with the result by optical streak camera. The results indicated that the radiation temperature was about 160 eV in a high Z cylindrical hohlraum which was irradiated by eight laser pulses with 260 J energy each, the length of the shock wave with a better planarity was 288 mm, the velocity was 3.15×106 cm/s and the pressure of the shock wave was 1.66×1012 Pa.