Suppression of multiple scattering effects in quasielastic light scattering by homodyne cross-correlation techniques

Abstract

By studying cross correlations in the intensity of light scattered by a fluid sample in different directions at different times, it is possible to measure the dynamic scattering function S(k,t) for the fluid. The multiple scattering contribution to the time-dependent cross correlations is very substantially less than the multiple scattering contribution to S(k,t) as obtained by a conventional single-detector quasielastic light scattering system.