A numerical Hartree self-consistent field calculation of an autoionization resonance parameters for a doubly excited 2s2, 3s2, and 4s2 states of He atom with a complex absorbing potential
Tsednee Tsogbayar, Yeager Danny L
       

(color online) Plots of for the 2s (a), 3s (b), and 4s (c) S states of the He atom. A dashed-line shows a position of an orbital energy shown in Table 1 and a black curve is the Coulomb potential. The computational parameters are N = 256 and b = 60 a.u. (panels (a), (b), and (c)).