REFLECTION OF A LIGHT-FLUX FROM A RANDOMLY INHOMOGENEOUS 2D MEDIUM WITH A MODEL 4-DIRECTIONAL SCATTERING PHASE FUNCTION UNDER THE OBLIQUE-INCIDENCE OF RADIATION UPON A SURFACE

In this paper, we use the classical Boltzmann transfer equation to ana lytically calculate the intensity of radiation at various depths under the oblique incidence of a stationary light flux upon a surface of a semi-infinite random 2D medium with a model four-directional scatterin g phase function of separate filamentary scatterers. Analysis of the d ependence of the total light reflection coefficient on the basic optic al characteristics of a medium and on the incidence angle theta(0) of radiation upon a medium surface is performed. In particular, the depen dence of the total reflection coefficient on the incidence angle and t he probability of the photon survival in the case of isotropic 2D scat tering from a separate center is studied. The results obtained are com pared with the exact solutions for an isotropically scattering 2D medi um.