Spectral emissivities and opacities of plasma at laserinteraction with targetsof various chemical composition

In the present work a theoretical model of plasma absorption and emission is developed and applied to explanation of some experimentally observed spectra from laser-produced plasmas under conditions being of interest for the ICF as well. The targets for ICF contain the layers of various materials: Be, Al, Cu, SiO 2 , agar (C 12 H 18 O 9 ) n , and others. Of interest is the code, calculating the optical characteristics of plasma of a complicated chemical composition in a broad range of plasma conditions (density and temperature). This spectroscopic modeling has been performed by a collisional-radiative model DESNA for non-LTE mixtures involving detailed structure of excited levels of all charge states from a neutral atom to a fully ionized ion. In the paper we present some new results of theoretical investigation of x-ray emission in the conditions close to real experiments on interaction of short and powerful laser pulses with targets. The simulation and available experimental results are in good enough agreement for various target materials (C, Al, Cu).