Numerical simulation study of laser-driven shock wave propagation in planar aluminium foils

摘要

A comprehensive numerical simulation study of laser-driven shock wave propagation in planar aluminium foils, 20-50 mum, is performed using the one-dimensional radiation hydrodynamic code MULTI. The effect of the spatial mesh size on the shock velocity and peak shock pressure is found to be significant and the optimum mesh size is obtained. Shock velocities and maximum pressure are calculated through simulations for two sets of laser intensities used in an experiment (Fu S, Gu Y, Wu J and Wang S 1995 Phys. Plasmas 2 3461). By using different sets of laser absorption coefficient values we determine the appropriate values reproducing the experimental results. We demonstrate that the simulations can be used as an effective tool for benchmark calculation of laser absorption coefficients. [References: 12]