Orbital configuration assignment ofSe4doubly excited states of lithium isoelectronic sequence

Abstract

Results of Hartree-Fock and multiconfiguration Hartree-Fock calculations using only two configurations (degenerate in zero order within the context of the nuclear-charge-expansion perturbation method) for ${}_{}{}^4{}_{}{}^{}S_{}^e{}_{}{}^{}$ doubly excited states of lithium isoelectronic sequence are used to propose an orbital configuration classification of these states, extending the similar classification by Holoien and Geltman for ${}_{}{}^4{}_{}{}^{}S_{}^e{}_{}{}^{}$ states of lithium only.