Energy Broadening Model for BGO Array Crystal from 0.059 to 1.332 MeV

Abstract

The energy resolution and energy broadening parameters are of great importance as far as scintillator detector is concerned. At present, BGO crystal due to its high density, high yield of photoelectric absorption, availability and cost is used in particle physics and medical imaging system especially in positron emission tomography (PET). The purpose of this study is to calculate the Gaussian energy broadening parameters of a 10 × 10 BGO array in order to use it in simulation for analysis of its spectral response in the presence of gamma rays in a wide range of energies. The Gaussian energy broadening parameters were extracted from the experimental spectrum to use them as the input parameters in MCNP4c code. The simulated response of the detector employing these parameters showed a good agreement with the experimental data.