A discrete method for anisotropic angular sampling in Monte Carlo simulations

A discrete method is presented for sampling anisotropic angular scattering distributions in Monte Carlo simulations. Derived from fundamental transport considerations, this method is based on equating the moments of a given distribution with those of a discrete distribution consisting of a sequence of Dirac delta spikes. The discrete method is slightly faster and, for a given scoring accuracy, more flexible than the tabular sampling method. …