Determination of Mass Attenuation Coefficients of Gamma Rays in Zinc

This study presents experimental method in order to determine the mass attenuation coefficient of a Zinc with different energy for 22Na and 137Cs sources. It is compared with two theoretical methods a graphic method and a transmission method. The method proposes to realize a numerical absorption calibration curve to process experimental results. The gamma-ray mass attenuation coefficients of Zinc absorber were determined experimentally at different gamma-ray energies and different Zinc thicknesses in order to investigate how the number of gamma photons and their energies affect the calculation of mass attenuation coefficients of the Zinc. The mass attenuation coefficients (µm) for Zinc (Cu) were measured in the γ-ray energy 22Na, 137Cs as sources. The measured values are compared with the theoretical values obtained by WINXCOM software.