Comparison of slab, spherical, and conical targets in X-ray simulation by using quasi-monoenergetic electrons

With rapid development in technology of high power lasers, the production of relativistic energetic electrons is provided by laser-plasma interaction. In bombardment of solid targets with quasi-monoenergetic electrons produced by laser pulse with energy of 500 mJ and pulse width of 30 fs, x-ray is generated. In this paper, the resulting x-ray flux is simulated by MCNP4C code based on the Monte-Carlo method. Also, the optimum parameters of different targets are evaluated. Then, to assess the most appropriate target geometry, three lead targets of sphere, slab, and cone in different dimensions are employed to compare the produced x-ray fluxes at the energy of characteristic x-ray, Kα.