An estimation method of energetic and spatial parameters of x-ray and gamma detectors

A mathematical model for the energy dispersive x-ray and low energy gamma detector is proposed, which is based on the analysis of the radiation and high energy electron transport in a detector. This model allows to estimate detector response function parameters. Using Monte Carlo method, probabilities of the photon registration in different parts of the detector response function were determined. The results obtained by this model are compared with experimental data within the energy range up to 2 MeV. Estimation of the limited spatial resolution due the processes of photon scattering and paths of electron deceleration was made.