QED contributions to the 3s-3ptransitions in highly charged Na-like ions

Abstract

The QED contributions to the energy intervals 3${\mathit{s}}_{1/2}$-3${\mathit{p}}_{1/2}$, 3${\mathit{p}}_{1/2}$-3${\mathit{p}}_{3/2}$, and 3${\mathit{s}}_{1/2}$-3${\mathit{p}}_{3/2}$ in highly charged Na-like ions were determined by comparing the transition energies derived from the observations with the relativistic many-body perturbation-theory calculations of Johnson, Blundell, and Sapirstein [Phys. Rev. A 38, 2699 (1988)] that do not include QED effects. The determined QED contributions differ considerably from the one-electron QED contributions and are in better agreement with screened-nucleus QED contributions. Predicted transition energies and wavelengths are presented for the Na-like ions with atomic numbers up to Z=92.