Total photon cross-sections of compounds in the energy range 145–1120 keV

Abstract

Total photon cross-sections have been measured in 15 compounds and in 3 selected elements at 7 different photon energies in the range of 145–1120 keV on a good geometry set-up using a NaI(Tl) detector coupled to a ND 60 multichannel analyser. The results include some data points which have not been previously reported. From the measured total cross-sections per molecule of the compound, atomic cross-sections in elements have been extracted using the mixture rule. The derived atomic cross-sections have been compared with the theoretical Hubbell-Scofield values and of Storm and Israel. In addition, the experimental total photon cross-sections of the three selected elements are compared with those derived from measurements on the compounds containing the selected elements. A good agreement is observed amongst the different values, within experimental error.