Hyperfine quenching of the 23P0,2 states in He-like ions

Abstract

The transition probabilities of the lines 11 S0 – 23 P0 and 11 S0 – 23 P2 in He-like ions with nonzero nuclear spins are calculated. The hyperfine-quenching effect on the lifetimes of the 23 P0,2 states is investigated. The Coulomb and Breit interelectronic interactions are taken into account to the order (α Z)2/Z by means of perturbation theory. The calculation is performed for both length and velocity gauges. The transition rates evaluated are in good agreement with previous 1/Z and CI calculations. PACS No.: 32.70Cs