Shock wave driven by x-ray radiation from cylindrical hohlraum on Shenguang II laser

A high Z cylindrical hohlraum was used to produce x-ray radiation flux, which was used to drive shock waves in an Al step sample. The radiation temperature is 155 eV. Experiments were carried out on 'Shenguang II' laser facility, with eight 250J, 0.35 μm wavelength, 1 ns Gaussian laser pulses. The planar and preheat-free shock wave was generated and a clear image of shock and preheat wave was obtained. The shock wave velocity and pressure was 31.2 km/s and 17.5 x 1011 Pa, respectively. The radiation temperature measured by streaked pyrometer, was consistent with that measured with a soft x-ray spectrometer which views through the laser entrance hole