Description of the autodonizing states of the multiply charged helium-like ions in the intermediate coupling

The diagonalization technique is employed for calculating the excitation energies and the widths of self-ionization $^1$Р$_{1}^{(-)}$ and $^3$Р$_{1}^{(-)}$ states of Fe$^{24+}$ ions, converging to the n = 2 threshold of the residual ion. The calculations were performed with allowance for the spin-orbital interaction, and also in the LS coupling approximation. It is seen by comparing our results with calculations which included Breit's complete operator that in calculating the widths of self ionization levels of helium-like iron ions in the intermediate coupling approximation one can restrict himself to only the single-particle operator of the spinorbital interaction. Here allowance for configuration mixing with respect to the principal quantum number results in only insignificant changes in the excitation energies and width of the self-ionization levels under study.