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 criticall y 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) congru ent to S-H+B/(Z-C) and the high-Z trend is compared with the correspon ding hydrogenic limit. Smoothed and interpolated predictions are prese nted for Z less than or equal to 54.