Exchange corrections of K x-ray emission rates

Separate relativistic Hartree-Fock solutions for atoms in their initial and final states are used for calculating the radiative decay of a K-vacancy state. The matrix-element calculations include the exchange effects of the nonzero overlap of wave functions from different subshells. Results are presented for the filling of the vacancy by the p electrons for a set of elements from Z=10 to 98. The Hartree-Fock theory is also used for calculating the rates of production of multiple-vacancy states in the decay process. In contrast to earlier single-potential calculations, the calculated values of ratios of the rates of the K x-ray components are in good agreement with the experimental values.