SUPPRESSION OF MULTIPLE-SCATTERING BY PHOTON CROSS-CORRELATION TECHNIQUES

With growing scientific interest in concentrated colloidal systems, multiple scattering becomes a major obstacle in many light-scattering experiments. Stimulated by work of Phillies and Drewel, three different dual-beam dual-detector dynamic light scattering experiments are discussed, which all achieve the isolation of singly scattered light by photon cross-correlation. All three experiments allow for a large variation of the scattering angle-an important requirement for studies of interacting systems.