Paper detail

Numerical Study of Kα X-ray Emission from Multi-layered Cold and Compressed Targets Irradiated by Ultrashort Laser Pulses

In this paper the generation of Kα X-ray produced by interaction of ultrashort laser pulses with metal targets has been studied numerically. Several targets were assumed to be irradiated by high intensity ultra-short laser pulses for the calculations. Using Maxwell Boltzmann distribution function for hot electron and applying an analytical model, the number of Kα photons were calculated as a function of hot electron temperature, target thickness and K-shell ionization cross section. Also, simulation results of Kα yield versus target thickness variations from two and three layer metals have been presented. These calculations are useful for optimization of X-ray yield produced by irradiation of metal targets with high intensity laser pulses. We also generalized this model and present simulation results on Kα fluorescence measurement produced by fast electron propagation in shock compressed materials.