Simulations of time-resolved x-ray diffraction in Laue geometry

Abstract

A method for computer simulation of time-resolved x-ray diffraction (TRXD) in asymmetric Laue (transmission) geometry with an arbitrary propagating strain perpendicular to the crystal surface is presented. We present two case studies for possible strain generation by short-pulse laser irradiation: (i) a thermoelastic-like analytical model; (ii) a numerical model including the effects of electron–hole diffusion, Auger recombination, deformation potential and thermal diffusion. A comparison with recent experimental results is also presented.