Calculation of gamma ray attenuation coefficients of some granite samples using a Monte Carlo simulation code

In this study, GATE as a Monte Carlo code is used for calculation of gamma ray attenuation coefficient of some granite samples at 662, 1173.2 and 1332.5keV photon energies. The simulated results of mass attenuation coefficients were compared with the experimental and theoretical data given in previous study. Satisfactory agreement has been observed between the GATE code and XCOM results. Differences between experimental and theoretical results were between 0.7% and 14.7%. This can be explained by experimental error. •GATE code is used for calculation of mass attenuation coefficient of granite samples.•The results compared with those obtained from XCOM and experimental study.•Satisfactory agreement is observed between the GATE code and XCOM results.•Differences between the results are explained with errors in the experimental setup.•Further experimental studies are proposed.