Incoherent-scattering cross sections in low- and medium-Zelements derived from the measured total attenuation cross sections in compounds

Abstract

The whole-atom integral incoherent-scattering cross sections have been obtained from the total attenuation cross sections in elements whose atomic number ($Z$) ranges from 1 to 56, at photon energies 279.2, 514, 661.6, and 1115.5 keV. The total attenuation cross sections in elements were derived with the aid of mixture rule from total attenuation cross sections in 26 solid chemical compounds, measured by performing transmission experiments in a good geometry setup. The present values of the whole-atom integral incoherent-scattering cross sections have been compared with the Klein-Nishina cross sections, the self-consistent-field Hartree-Fock values of Hubbell et al., and the available earlier experimental results. Electron binding effects have also been discussed.