Relativistic multireference many-body perturbation theory calculations on Au

Many-body perturbation theory (MBPT) calculations are an adequate tool for the description of the structure of highly charged multi-electron ions and for the analysis of their spectra. We demonstrate this by way of a re-investigation of n=3, Δn=0 transitions in the EUV spectra of Na-, Mg-, Al-like, and Si-like ions of Au that have been obtained previously by heavy-ion accelerator based beam-foil spectroscopy. We discuss the evidence and propose several revisions on the basis of our multi-reference many-body perturbation theory calculations of Ne- through P-like ions of Au