Breit–Pauli energy levels, lifetimes, and transition probabilities for the beryllium-like to neon-like sequences

Abstract

Energy levels, lifetimes, and transition probabilities for transitions between computed levels are reported for the Be-like ( Z=4,…,12) to Ne-like ( Z=10,…,24) sequences. In most cases, results include all levels up to 2s3d in spectra of Be-like atoms or ions and 2s 22p n 3d, n=0,…,5 in spectra of B-like to Ne-like, respectively. Wavefunctions were determined using the multi-configuration Hartree–Fock method with relativistic effects included through the Breit–Pauli Hamiltonian, omitting only the orbit–orbit interaction. Both allowed (E1) and forbidden (M1, E2, M2) transitions are reported.