Screening constant by unit nuclear charge calculations for (ns(2)) Se-1, (np(2)) (1)De and (Nsnp) P-1 degrees excited states of He-like systems

摘要

Screening Constant by Unit Nuclear Charge (SCUNC) is a new analytical method suitable for the treatment of the properties of He-like systems. In this paper, the possibilities of the method are demonstrated for calculating in the framework of semi-empirical procedure, total energies, total electron-electron interaction energies and excitation energies for (ns(2)) S-1(e), (np(2)) D-1(e) and (Nsnp) P-1 degrees doubly excited states of He-like ions. The proposed semi-empirical scheme, leads to accurate results in good agreement as well as with available other theoretical results than experimental data.