Numerical method for external Bremsstrahlung cross sections in compounds

A numerical method is used to evaluate External Bremsstrahlung (EB) cross section in compounds such as NaI, SiLi, and GeLi first time using tabulated data given for elements. Modified atomic number defined for compound is used to evaluate cross section. This evaluated theoretical data may be useful for the analysis of experimental spectrum and yield of EB in thick target compounds.