Calculation of angular distribution of 662 keV gamma rays by Monte Carlo method in copper medium

This paper presents results on the angular distribution of Compton scattering of 662 keV gamma photons in both forward and backward hemispheres in copper medium. The number of scattered events graph has been determined for scattered gamma photons in both the forward and backward hemispheres and theoretical saturation thicknesses have been obtained using these results. Furthermore, response function of a 51×51 mm NaI(Tl) detector at 60° angle with incoming photons scattered from a 10 mm thick copper layer has been determined using Monte Carlo method.