Abstract

The lifetimes of the lowest ²S_1/2 state in Al, Ga, In, and Tl have been measured by observing the exponential decay of the fluorescence arising from the ²S_1/2–²P_3/2 transition in each atom, following selective excitation of the ²S_1/2 state by an N₂ laser-pumped dye laser. The values obtained for the ²S_1/2 state lifetimes were τ(A1) = (6.8 ± 0.3) ns, τ(Ga) = (7.0 ± 0.4) ns, τ(In) = (7.4 ± 0.3) ns, τ(Tl) = (7.8 ± 0.3) ns.

© 1977 Optical Society of America

Direct measurements of excited-state lifetimes in Mg, Ca, and Sr†

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