Measured lifetime data for the 2s 21 S 0 -2s2p 1;3 P1 resonance and intercombination lines in the Be isoelectronic sequence are critically evaluated, and jointly systematized using effective singlet-triplet-reduced line strengths Sr. The data are examined together with recent theoretical predictions in the linearizing exposition Z 2 Sr D SHCB=.Z C/ and the high-Z trend is compared with the corresponding hydrogenic limit. Smoothed and interpolated predictions are presented for Z 6 54.
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Curtis et al. (1996) studied this question.
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