Effects of relativity on multiplet splitting and decay rates of the1s2p2configuration of Li-like ions

Properties of the $1s2p^2$ states of Li-like ions are calculated relativistically for $6\le Z\le 30$, with particular attention to the effects of the Breit interaction on multiplet splitting and the radiationless transitions through which these states decay. The full Breit interaction (magnetic and retardation terms) is included in calculating fine structure. Transition rates are computed in relativistic intermediate coupling with configuration interaction. Both the spin-orbit and magnetic interactions are incorporated in the calculations. Results are compared with earlier calculations and with experiment, and the physics of observed relativistic and configuration-interaction effects is discussed.