A comparison of 3D static light-scattering experiments with Monte Carlo simulations

The problems arising in conventional static light-scattering experiments with turbid samples due to multiple scattering of light can be overcome by the cross correlation technique. We recently reported results of 3D cross correlation experiments in which the angle dependence of the experimentally determined values of the singly scattered light intensity agrees with that of the scattering cross section of the suspended particles. In this paper we present measurements for various optical path lengths of the scattered light and compare the experimental results with Monte Carlo simulations. We demonstrate that the dependences of the singly and multiply scattered light intensities on the optical path length obtained by the 3D cross correlation method are in good agreement with the data obtained from Monte Carlo simulations. These results further confirm that the 3D cross correlation technique indeed allows the direct determination of the singly scattered light intensity by experimental means without any need for the detailed information about the experimental set-up that is necessary in Monte Carlo simulations.