Energy levels, transition rates, lifetimes of He-like-ions with [formula omitted] deduced from relativistic multiconfiguration Dirac–Hartree–Fock and many body perturbation theory calculations

Abstract

We disclose relativistic multiconfiguration Dirac–Hartree–Fock (MCDHF) spectrum calculations for He-like-ions with Z=72–76. The excitation energy and the oscillator strength values have been computed for the 127 odd- and even-parity states as well as lifetimes and transition rates between different states. To study the accuracy of our results, we have implemented parallel calculations using a Flexible Atomic Code (FAC) by introducing the many body perturbation theory (MBPT). Additionally, the Breit interaction and leading quantum electrodynamics effects (QED) are included as perturbations in the present calculations.