Predictive systematization of line strengths for the 2s(2)-2s2p resonance and intercombination transitions in the Be isoelectronic sequence

Measured lifetime data for the 2s(2) 1S(0)-2s2p P-1,3(1) resonance and intercombination lines in the Be isoelectronic sequence are critically evaluated, and jointly systematized using effective singlet-triplet-reduced line strengths S-r. The data are examined together with recent theoretical predictions in the linearizing exposition Z(2)S(r) congruent to S-H+B/(Z-C) and the high-Z trend is compared with the corresponding hydrogenic limit. Smoothed and interpolated predictions are presented for Z less than or equal to 54.