Energy levels, weighted oscillator strengths, transition rates, lifetimes of He-like-Pt deduced from the relativistic multiconfiguration Dirac–Hartree–Fock and relativistic configuration interaction theory calculations

Abstract

We disclose relativistic multiconfiguration Dirac–Hartree–Fock (MCDHF) spectrum calculations for He-like-Pt. Energy levels and weighted oscillator strengths are calculated for 127 odd- and even-parity states as well as lifetimes and transition rates between these states. For comparative purpose, we have implemented parallel calculations using a Flexible Atomic Code (FAC) by introducing the relativistic configuration interaction (RCI) method. Additionally, the Breit interaction and leading quantum electrodynamics effects (QED) are included as perturbations in extensive RCI calculations. We signal that, our calculations for He-like-Pt are made for the first time and they provide to date the most accurate and complete atomic data related to this ion.