Abstract
The geometric structure parameters and radial density distribution of 1s2s 1S excited state of the two-electron atomic system near the critical nuclear charge Zc were calculated in detail under tripled Hylleraas basis set.Contrary to the localized behavior observed in the ground and the doubly excited 2p2 3pe states,for this state our results identify that while the behavior of the inner electron increasingly resembles that of a hydrogen-like atomic system,the outer electron in the excited state exhibits diffused hydrogen-like character and becomes perpendicular to the inner electron as nuclear charge Z approaches Zc.This study provides insights into the electronic structure and stability of the two-electron system in the vicinity of the critical nuclear charge.
基金项目
National Natural Science Foundation of China(12074295)
National Natural Science Foundation of China(12304271)
National Natural Science Foundation of China(12104420)
维普
万方数据