Determination of Photon Mass Attenuation Coefficient for Some Phantom Materials using GATE Code and Comparison with Experimental and XCOM Data

The main purpose of this study is focused on testing the applicability of a Monte Carlo simulation code GATE V6.2 for studying mass attenuation coefficients for different types of phantom materials (water, RW3, silicon, acrylic and paraffin) at 662, 1173 and 1332 keV photon energies. Gamma ray transmission measurements have been used to evaluate the phantom materials. The simulated results of mass attenuation coefficients were compared with the experimental and theoretical XCOM data for the same samples. The results indicate that GATE V6.2 code show a moderately good agreement with the experimental and theoretical result.