Va. Yerokhin et al., Calculation of the interelectronic-interaction correction to radiative recombination of an electron with a heavy He-like ion, HYPER INTER, 132(1-4), 2001, pp. 393-396
We present a calculation of the interelectronic-interaction correction of f
irst order in 1/Z for radiative recombination of an electron with a heavy H
e-like ion in the ground state. A rigorous relativistic treatment is demons
trated which includes the Coulomb, Breit and retarded: parts of the interel
ectronic interaction. A complete relativistic evaluation is compared with t
wo frequently used approximations.