Dynamical Collision Frequency in Warm Dense Matter: Exemplary Application to Plasma Reflectivity

Based on a generalized linear response theory the dielectric function has been calculated via a generalized DRUDE formula with the dynamical collision frequency in different approximations. We apply these expressions for the dielectric function to latest experimental data on the reflectivity of a Xe-plasma under oblique incidence in extension to earlier results for the perpendicular case. While the conclusions on the plasma's density profile in the front region are verified, the separate treatment of the s- and p-polarized wave allows fora more detailed examination and further improvement of the profile's description. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA. Weinehim