The radiative transition and autoionization calculations for highly ionized tungsten and gold using configuration interaction method

Keywords: AUTOSTRUCTURE, energy levels, wavelengths, oscillator strengths, transition probabilities, autoionization rates, quantum electrodynamics, Breit relativistic contributions, correlation effects In this study, energy levels and transition parameters such as wavelengths, oscillator strengths and transition probabilities for electric dipole (E1), magnetic dipole (M1) electric quadrupole (E2), and magnetic quadrupole (M2) transitions between these levels for highly charged sodium and magnesium like tungsten and gold ions (W63+, W62+, Au68+ and Au67+) have been calculated using AUTOSTRUCTURE atomic code developed by Badnell. In these calculations, the effects on the computational results of correlation effects, quantum electrodynamic (QED) contributions (self-energy and vacuum polarization) and Breit relativistic effects (magnetic interaction between the electrons and retardation effects of the electron–electron interaction) have been investigated. In addition to these radiative transitions, autoionization rates have been also given. The obtained results have a good agreement when compared to other theoretical and experimental results in literature. In particular, this agreement is better when Breit relativistic and QED effects take into account along with configurations including core subshell excitations according to core-valence correlation.