Amplitudes of electronic wavefunctions at nuclei for atoms: Pt. 1

Based on the atomic self-consistent-field theory, the authors have performed relativistic calculations for reduced normalization factors and photoionization cross sections of occupied shells of various ionized iron and uranium atoms. For photoionization cross sections of a specific subshell of an atom with various degrees ionization, their ratios at photon energies above about 101 keV agree with the squares of the ratios of the corresponding reduced normalization factors within 1%