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

The QED contributions to the energy intervals 3s1/2-3p1/2, 3p1/2-3p3/2, and 3s1/2-3p3/2 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.