UNTERSUCHUNG DES MEHRFACHGESTREUTEN LICHTES MIT HILFE DER 3D - KREUZKORRELATIONSAPPARATUR.

Abstract

In very cloudy systems it is often difficult to analyse the light scattering data because of multiple scattered light contributions. Cross correlation technique allows to eliminate the multiple scattered light from one side and to determine it´s value from another side. Two types of latex solutions of different concentrations were investigated within this work. The influence of scattering angle, position in the sample, detector non-linearity an static and dynamic light scattering was examined. For all samples intensity and correlation functions were calculated and analysed.For comparison of light scattering data from 3D- cross correlation technique and from one- beam cross correlation technique the critical solution of Polystyrole in Cyclohexane was investigated. The results show a slight deviation of experimental values from theoretical. This deviations are lower for measurements with 3D- cross correlation technique.