Brewster angle of shock-compressed xenon plasmas

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Norman, G.E.^1,2 ; Saitov, I.M.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^1

Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny, Moscow Region

141700, Russia^2

关键词: Brewster angle;    Brewster angle measurements;    Calculated values;    Dielectric functions;    Drude theory;    Experimental values;    Nonuniform media;    Xenon plasma;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012111/pdf
DOI  :  10.1088/1742-6596/653/1/012111

来源: IOP

【 摘 要 】

Experimental results for Brewster angle measurements are used to estimate the width of the shock front in xenon. The possible influence of the shock front width on the dense xenon reflectivity is discussed. The calculated values of the Brewster angle are shifted with respect to the experimental values. It may be partially related to the nonzero width of the wave front. The estimated values of the widths are 161, 154, and 145 nm for the wavelengths 1064, 694, and 532 nm respectively. These values are obtained within the framework of the Drude theory of reflection in the optically nonuniform media. The density functional theory (DFT) is applied to calculate values of the dielectric function and refraction. The effect is discussed if the widths found could influence the normal reflectivity obtained in the framework of the DFT.