Simulation of light scattering by large particles with randomly distributed spherical or cubic inclusions

An algorithm for simulation of light scattering by large spherical or cubic particles containing large spherical or cubic inclusions is developed. The computational procedure is based on ray tracing and a direct simulation Monte Carlo method. The proposed technique is capable of calculating scattering and polarization phase functions produced by an ensemble of randomly oriented particles containing large sized randomly distributed inclusions. In order to demonstrate the capacity of the computational procedure, the influence of the size of the inclusion on the scattering and polarization phase functions is examined in two configurations: spherical host with a concentric cubic inclusion and a cubic host with randomly distributed spherical inclusions.