DOI

A simple method for deriving the energy level shifts in the QED of multicharged ions is considered. Calculation formulas for the reducible part of the two-photon-exchange diagrams in both the Feynman and the Coulomb gauges are derived for arbitrary states of two-electron multicharged ions. The final expressions for this contribution have a form that is convenient enough for numerical calculations.

Original languageEnglish
Pages (from-to)4489-4501
Number of pages13
JournalPhysical Review A
Volume49
Issue number6
DOIs
StatePublished - 1 Jan 1994

    Scopus subject areas

  • Atomic and Molecular Physics, and Optics

ID: 35710078