<title>Angular anisotropy and kinetics of light backscattering from discrete random media</title>

Abstract

The results of experimental study and theoretical treatment of the evolution of the backscattered light pulse in statistically homogeneous disordered medium are presented. Scattering kinetics was measured for water solutions of the latex microparticles with time-correlated photon-counting setup and ML Ar -laser. It is shown that backscattered pulse arrived to photo detector with essential delay with respect to the pulse reflected from the surface of the scattering medium. This delay is due to angular anisotropy of the scattering. Backscattering of non-coherent, diffuse component of radiation propagating in forward direction develops in inner layers of the medium and determines the value and concentration dependence of the backscattered pulse delay.