Two different regions were observed in the behavior of mass attenuation
coefficients. Firstly, there is a sharp decrease of mass attenuation
coefficients in the energy range from 238.63 keV up to 583.19 keV
because of the dominant reaction between the investigated stainless steel
samples and gamma rays is the photoelectric effect.
Secondly, a slight decrease of mass attenuation coefficients was observed from 583.19 keV up to 2614.51 keV which was attributed
to the Compton scattering process.