Hydrodynamic Efficiency and Thermal Transport in Planar Target Experiments at LLE

摘要

The authors report the results of single beam irradiation of thin CH foils at laser intensities of 10 exp 13 to 10 exp 15 W/cm exp 2 in 0.8 ns pulses containing 20 to 50 J of 350 nm and 1054 nm light. They also discuss the hydrodynamic efficiency, thermal transport and preheat in these targets. Included is the measurement of the ion blowoff energy distribution and velocity. The efficient acceleration by short wavelength radiation causes target displacements comparable to the spot size resulting in two-dimension effects. The results are adequately modeled with the 2-D hydrocode SAGE using a flux limiter of f=0.04. (ERA citation 10:006084)