Stabilization method with the relativistic configuration-interaction calculation applied to two-electron resonances

We applied a relativistic configuration-interaction (CI) framework to the stabilization method as an approach for obtaining autoionization resonance structure of heliumlike ions. In this method, ion is confined within impenetrable spherical cavity, size which determines radial space available electron wavefunctions and electron-electron interactions. By varying one can obtain position width. The applicability tested on resonances He atom while comparing with benchmark data in literature. present further determination uranium ion, where mandatory. strong-confinement region, be useful simulate properties or under extreme pressure. An exemplary application determine ions embedded dense plasma environment briefly discussed.