Screening constant by unit nuclear charge calculations for (n s2)1Se, (np2)1De and (N s n p)1P° excited states of He-like systems
University Cheikh Anta Diop, Department of physics, Atoms Laser Laboratory, 12500 Dakar, Senegal
Corresponding author: a email@example.com
Revised: 27 February 2007
Published online: 8 February 2008
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 (ns2)1Se, (np2)1De and (Nsnp)1P° 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.
PACS: 31.15.bu – Semi-empirical and empirical calculations / 31.15.vj – Electron correlations calculations for atoms and ions: excited states
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008