Improved Cross-Correlation Dynamic-Light-Scattering Method

A dynamic-light-scattering (DLS) method that reduces undesired contributions from multiply scattered photons has been invented. The method involves, among other things, cross-correlation processing of the outputs of two photodetectors aimed along intersecting, nearly parallel lines of sight. This present method can be characterized as an improved version of the method described in "Multiple Scattering Suppression in Laser Light Scattering" (LEW-16517),NASA Tech Briefs, Vol. 23, No. 11 (November 1999), page 14a.