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Two-photon exchange corrections to the 2p(1/2)-2s transition energy in Li-like high- Z ions
1Max-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.
Physical Review Letters
|November 18, 2000
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.