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

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) The η-trajectories for (black diamonds) and (blue diamonds) for the 3s (a) and 4s (b) S states of the He atom. Crosses are for and and the Padé extrapolated values (end point of the green line), respectively. The computational parameters are N = 256, b = 60 a.u. (panels (b) and (c)) and 13.75 (a) and 22.5 (b), respectively. The values of strength parameter for (black crosses) are 0.24 (a) and 0.05 (b), respectively. The (blue crosses) are 0.55 (a) and 0.12 (b), respectively and (panels (b) and (c)).