Experimental study of ablation parameters of aluminum target by 0.35 μm laser

The laser-driven ablation parameters were measured by using the method of time-integrated and time-resolved crystal spectrometers respectively. The experimental results show that for Al target driven by 0.35 μm laser with absorbed laser intensity of 1.4×10 14 W/cm 2, mass ablation rate measured by time-integrated crystal spectrometer is 6.8×10 5 g/cm 2·s, and ablative pressure is estimated to be 4.7×10 12 Pa and 4.4×10 12 Pa according to momentum conservation and energy conservation respectively. Mass ablation rate with absorbed laser intensity of 1.6×10 14 W/cm 2 is 6.1×10 5 g/cm 2·s by using time-resolved crystal spectrometer, and the ablation pressure is estimated to be 4.4×10 12 Pa from energy conservation.