STATIC AND DYNAMIC PROPERTIES OF MULTIPLE LIGHT-SCATTERING

We have examined the onset and evolution of multiple scattering of light on a series of latex dispersions as a function of increasing volume concentration phi of particles. We have shown that using vertically polarized incident light, the static scattered intensity becomes progressively depolarized, with increasing phi. The polarization of scattered light is completely random in the limit of strong multiple scattering. The spectra of decay times of dynamic light scattering display a region of oligo scattering at intermediate phi where both the single and multiple scattering components can be dynamically identified. For phi > 0.03 the limit of diffusive transport of light is attained. The obtained results confirm that our earlier measurements of dynamic light scattering on systems exhibiting critical opalescence are not influenced by multiple light scattering.