Dust-Effect Reduction Facility of a Digital Correlator for Dynamic Light Scattering

Abstract
A minicomputer-assisted digital correlator for dynamic light scattering (DLS) measurement has been made. The correlator has a unique circuit construction to minimize the effect of dust particles in sample solutions. Detailes of the operation of electronic circuits assuring the dust-effect reduction facility are described. An example of the measurement of DLS correlation functions for solutions of polystyrene latex spheres is presented demonstrating the correlator's performance.