Electron–electron interaction effects in heliumlike atoms confined in finite external square-well potential

摘要

A B-spline-based configuration interaction method is used to compute the energy levels of theground and a few excited states of heliumlike atoms confined in a finite external square-well potential, as afunction of the depth of the confining shell potential. The electron probability density and the dependenceof the energy levels in the shell potential are used to account for the electron-electron interaction whenthe atoms are submitted to such an environment.