title: Two-photon exchange corrections to the 2p(1/2)-2s transition energy in Li-like high- Z ions
abstract: A rigorous QED calculation of the two-photon exchange corrections to the 2p(1/2)- 2s transition energy in Li-like high- Z ions is presented. The contribution due to an exchange by more than two photons is evaluated within the Breit approximation. The resulting theoretical value of the 2p(1/2)- 2s transition energy in Li-like uranium is found to be 280.44(20) eV.
authors.affiliation: Max-Planck-Institut fur Physik Komplexer Systeme, Nothnitzer Strasse 38, D-01187 Dresden, Germany and Institute for High Performance Computing and Data Bases, Fontanka 118, St. Petersburg 198005, Russia.
authors.initials: VA
authors.lastname: Yerokhin
authors.initials: AN
authors.lastname: Artemyev
authors.initials: VM
authors.lastname: Shabaev
authors.initials: MM
authors.lastname: Sysak
authors.initials: OM
authors.lastname: Zherebtsov
authors.initials: G
authors.lastname: Soff