Factors Affecting Gamma Ray Transmission

Gamma ray transmission and the parameters which affect this process; attenuation coefficients, cross-sections, effective atomic numbers and electron densities, were studied for brass, fe, al, pvc and perspex, using gamma spectroscopy. the comparison between experimental and theoretical values is made; these are found to be in good agreement. the inverse relations between energy and attenuation coefficients, as well as cross-sections were emphasized. in the energy range (661.6 kev-1332.5 kev), the effective atomic numbers showed a constant behavior with energy. brass shows up as a good attenuating material, while other samples are relatively weak attenuators. the effect of the composition of the compound appears obviously in this study.