Studies on total attenuation cross sections of several elements at 662 and 1170 KeV.

The photon attenuation cross sections of several elements of thin uniform multiple foil were determined in the energy at 662 and 1170 KeV photons by using formula σtot= μ/ρ (A/N) x 1024, the values are compared with the values calculated from the data of Hubbell for the individual elements.The radioactive sources used in the experiments were Cs137 and Co60. Total attenuation cross sections for several elements have been measured for gamma rays from 662 and 1170 keV photons using the well type scintillation spectrometer. Measurements have been made to determine total photon cross sections very accurately by using a narrow collimated beam method which effectively excluded correction due to small angle and multiple scattering of photons. The values of Total attenuation cross sections are found to be in good agreement with the theory