Angular structure of radiation scattered by a dispersive layer with a high concentration of optically soft particles

A method describing the propagation of radiation in concentrated dispersive media with optically soft particles is developed. The results of analysis of the angular structure of radiation scattered in the forward and backward semispheres depending on the direction of layer illumination, its optical thickness, concentration and the size of optically soft particles, are presented. The transport theory is used to describe the propagation of radiation. The equation of radiation transport is solved by the doubling method with the help of spline approximation averaged over the azimuth of scattering indicatrix in a unit volume. The parameters of the unit volume were determined by using the Mie theory and the interference approximation taking into account the collective scattering effects at a high concentration of particles.