Breit-Pauli calculations of the energy levels and oscillator strengths of Be-like ions

Excitation energies and oscillator strengths are calculated for all electri c dipole transitions between the individual levels of the 1s(2)2s(2), 1s(2) 2s2p and 1s(2)2p(2) states for a range of Be-like ions from B II to Kr XXXI II. The configuration interaction wavefunctions used in these calculation w ere generated by the CIV3 code. Relativistic effects were included by using the Breit-Pauli approximation. The results are compared with recent calcul ations and are found to be in good agreement with more elaborate calculatio ns.