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) Plots of a cardinal function with N = 8 (a), and an error for a numerical solution for the Poisson equation (b). In panel (b), blue, red, green, and black curves correspond to the 1s , 2s , 3s , and 4s S states of the He atom, respectively. Computational parameter b = 60 a.u.