QED calculations of intra-L-shell singly excited states in Be-like ions
A. V. Malyshev, Y. S. Kozhedub, V. M. Shabaev, and I. I. Tupitsyn The ab initio approach is used to evaluate the excitation energies of the 2s2p2S+1PJ states from the ground state as well as the 2s2p3P1→ 2s2p3P0 and 2s2p3P2→2s2p3P1 transition energies for selected Be-like highly charged ions over a wide …