Om. Zherebtsov et al., Third-order interelectronic-interaction correction to the 2p(1/2)-2s transition energy in lithiumlike ions, PHYS LETT A, 277(4-5), 2000, pp. 227-232
Third-order interelectronic-interaction correction to the energies of (1s)(
2)2s and (1s)(2)2p(1/2) states of high-Z lithiumlike ions is evaluated with
in the Breit approximation in the range 20 less than or equal to Z less tha
n or equal to 100. The calculation is carried out using both the relativist
ic configuration-interaction method and perturbation theory. The correction
is shown to be important for the comparison of theory and experiment. (C)
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