Theoretical Wavelengths for Ka-TYPE X-Ray Lines in the Spectra of Ionized Atoms (carbon to Copper)

Abstract

Theoretical Hartree-Fock calculations have been used to determine wavelengths of Ka-type X-ray transitions in atoms in which a varying number of the outer, shielding electrons have been removed. The atoms treated range from carbon to copper, and for each element all stages of ionization are considered, with the exception, where applicable, of those stages containing electrons beyond the 3d shell. For the light elements, carbon to neon, the influence of term structure is taken into account. In addition to wavelengths, tables are given for configuratioa and term energies, dipole integrals, and relative multiplet strengths. Comparison of the theoretical wavelengths with known normal Ka X-ray lines and with observed or extrapolated lines in helium-like ions shows that the calculations are not in error by more than 5 per cent. An adjustment of the calculations to match the few known wavelengths yields final results that can aid in further laboratory and astronomical studies of the identification of these unusual X-ray lines.