Light scattering in a layer of correlatively arranged optically soft particles

摘要

The light scattering by an ensemble of monodisperse spatially correlated optically soft spherical particles is studied in the interference approximation. A model of the interaction of particles is proposed in which the spatial correlation between particles is determined by a radius R-c exceeding the particle radius R-p. The radial distribution function is calculated in the Percus-Yevick approximation for hard spheres of the radius R-c. To simulate the radiation scattering from an individual particle of the radius R-p, the Mie equations are used. It is shown that, in a medium of correlated small nonabsorbing particles of the radius R-c > R-p, an abnormal wavelength dependence of the refractive index is possible at a low volume concentration of particles. The results obtained explain some experimentally observed features of the scattering in sodium borosilicate glasses with a small concentration of scattering centers.