CALCULATION OF THE TOTAL COEFFICIENT OF REFLECTION OF LASER-RADIATIONFROM A SEMIINFINITE HOMOGENEOUS MEDIUM WITH SMALL-SCALE SCATTERING CENTERS

In this paper, we consider the reflection of light from a semi-infinit e scattering medium. In the case of a medium with a linear scattering phase function, we analytically calculate the first partial reflection coefficient for various incidence angles using the method of separati on of fluxes. The results of these calculations are compared with the exact values of the reflection coefficient calculated with the use of the Ambartsumyan formulas. It is demonstrated that, in the case of str ong absorption, the first partial reflection coefficient virtually coi ncides with the total reflection coefficient. Analysis performed in th is paper shows that, with the growth in the incidence angle (measured from the interior normal to the surface), the first partial reflection coefficient increases, i.e., the fraction of photons in reflected rad iation that reverse the sign of their velocity projection on the norma l to the material surface grows. At the same time, this fraction is vi rtually independent of the anisotropy degree of the scattering phase f unction, i.e., the quantity (cos gamma).