Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of the Optical Society of America

Measurement of the lowest S-state lifetime of Al, Ga, In, and Tl†

Mark D. Havey, L. C. Balling, J. J. Wright

Published Apr 1, 1977• 22 citations
Publisher

Abstract

The lifetimes of the lowest 2S1/2 state in Al, Ga, In, and Tl have been measured by observing the exponential decay of the fluorescence arising from the 2S1/2–2P3/2 transition in each atom, following selective excitation of the 2S1/2 state by an N2 laser-pumped dye laser. The values obtained for the 2S1/2 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.

DOI
10.1364/josa.67.000491

Related papers

Direct Measurements of Excited-State Lifetimes in Group-II and Group-Iii Atoms.

Mark D. Havey

The lifetimes of a large number of excited states in the Group II and Group III atoms have been measured.Among these states are the 5s5p3Pj metastable state of Sr and the lowest 3Sj state of Mg, Ca, and Sr.Also measured were the lifetimes of the lowest 2Sa states of Al, Ga, In and Tl, and "2 the lifetimes of several andXD2 states of Ca.The ex cited states were populated by one-and two-step dye laser excitation, and the lifetimes determined by direct observa tion of the subsequent resonance or branching fluorescence.The results obtained for states in the triplet series of the Group II atoms are: t {Sr 3P ) =(21.0 ± 1.0)ysec, r{Mg 3Sl) = (9.7 ± 0.5) nsec, t(Ca 3S 1)= ( 11.7 ± 0.6) nsec,x(Sr 3Sj ) = (12.9± 0.7) nsec.ix CHAPTER X

•Jun 1, 1977•0 citations

The Lifetimes of the 72P1/2 and 72P3/2 States of Cesium

Paul W. Pace, J. B. Atkinson

The lifetimes of the 72P3/2 and 72P1/2 states of atomic cesium have been determined using delayed coincidence techniques. A nitrogen laser pumped tunable dye laser was used to excite the cesium vapor and direct measurements of the fluorescence decay yielded the following lifetimes: τ3/2(72P3/2) = 136 ± 4 ns and τ1/2(72P1/2) = 158 ± 5 ns. These values are in good agreement with recent measurements and calculations.

Canadian Journal of Physics•May 15, 1975•17 citations

Direct measurements of Ba+ excited-state lifetimes

Mark D. Havey, L. C. Balling, J. J. Wright

The lifetimes of the $7s^{2}S_{\frac{1}{2}}$, $6d^{2}D_{\frac{5}{2}}$, and $6d^{2}D_{\frac{3}{2}}$ states of singly ionized Ba have been measured. The lifetime of each state was determined by direct observation of the decay of the fluorescence emitted from the excited state, following selective excitation by two-step, dye-laser excitation. The values obtained for the lifetimes were $\ensuremath{\tau}(7s^{2}S_{\frac{1}{2}})=7.91\ifmmode\pm\else\textpm\fi{}0.56$ nsec, $\ensuremath{\tau}(6d^{2}D_{\frac{5}{2}})=5.56\ifmmode\pm\else\textpm\fi{}0.34$ nsec, and $\ensuremath{\tau}(6d^{2}D_{\frac{3}{2}})=4.99\ifmmode\pm\else\textpm\fi{}0.33$ nsec.

Physical Review A•Jun 1, 1977•3 citations

Measurement of Lifetimes of Excited States of Na, Tl, In, Ga, Cu, Ag, Pb, and Bi by the Phase-Shift Method

Paul T. Cunningham, John K. Link

Lifetimes of 13 upper states of optical-resonance transitions in selected metal atoms have been measured using the phase-shift method. Data were taken over a range of at least 12 of fluorescence intensity, to take into account the effects of radiation entrapment and exciting light scattering. The following results were obtained: Na 3p2P0 16.2 nsec, Tl 7s ²S12 7.65 nsec, Tl 6d²D32 6.9 nsec, In 6s ²S12 7.5 nsec, In 5d ²D32 7.9 nsec, In 5d ²D52 7.9 nsec, Ga 5s ²S12 7.6 nsec, Ga 4d2D 7.7 nsec, Cu 4p2P0 7.2 nsec, Ag 5p ²P120 6.7 nsec, Ag 5p ²P120 7.5 nsec, Pb 7s3P10 6.05 nsec, and Bi 7s ⁴P12 5.9 nsec. Estimated absolute accuracies vary between 3 and 7%.

Journal of the Optical Society of America•Aug 1, 1967•87 citations

Lifetime measurements in the excited S states of K, Rb, and Cs by the cascade Hanle effect*

Basim R. Bulos, R. Gupta, W. Happer

The cascade Hanle-effect technique has been described in detail. It has been used to measure the radiative lifetimes of several excited S states in heavy alkali metal atoms. We obtained the following measurements (in nanoseconds): τ(K, 6 2S1/2) = 68 ± 9, τ(Rb, 7 2S1/2) = 91 ± 11, τ(Cs, 8 2S1/2) = 96 ± 14, and τ(Cs, 9 2S1/2) = 231 ± 35.

Journal of the Optical Society of America•May 1, 1976•35 citations

Lifetime Measurements of the 4s^2S_1/2 and 3d^2D States of Aluminum by the Phase-Shift Method

Paul T. Cunningham

Lifetimes of the upper states of two optical-resonance transitions in aluminum have been measured using the phase-shift method. Data were taken over a large range of fluorescence intensities, to allow for evaluation of the effects of scattered exciting light and radiation entrapment. The results obtained are τ4s2S12=7.05, τ3d2D = 13.70 ± 0.40 nsec.

Journal of the Optical Society of America•Nov 1, 1968•10 citations
The lifetimes of the lowest 2S1/2 state in Al, Ga, In, and Tl have been measured by observing the exponential decay of the fluorescence arising from the 2S1/2–2P3/2 transition in each atom, following selective excitation of the 2S1/2 state by an N2 laser-pumped dye laser. The values obtained for the 2S1/2 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.
The lifetimes of a large number of excited states in the Group II and Group III atoms have been measured.Among these states are the 5s5p3Pj metastable state of Sr and the lowest 3Sj state of Mg, Ca, and Sr.Also measured were the lifetimes of the lowest 2Sa states of Al, Ga, In and Tl, and "2 the lifetimes of several andXD2 states of Ca.The ex cited states were populated by one-and two-step dye laser excitation, and the lifetimes determined by direct observa tion of the subsequent resonance or branching fluorescence.The results obtained for states in the triplet series of the Group II atoms are: t {Sr 3P ) =(21.0 ± 1.0)ysec, r{Mg 3Sl) = (9.7 ± 0.5) nsec, t(Ca 3S 1)= ( 11.7 ± 0.6) nsec,x(Sr 3Sj ) = (12.9± 0.7) nsec.ix CHAPTER X
The lifetimes of the 7s2S127s^{2}S_{\frac{1}{2}}7s2S21​​, 6d2D526d^{2}D_{\frac{5}{2}}6d2D25​​, and 6d2D326d^{2}D_{\frac{3}{2}}6d2D23​​ states of singly ionized Ba have been measured. The lifetime of each state was determined by direct observation of the decay of the fluorescence emitted from the excited state, following selective excitation by two-step, dye-laser excitation. The values obtained for the lifetimes were $\ensuremath{\tau}(7s^{2}S_{\frac{1}{2}})=7.91\ifmmode\pm\else\textpm\fi{}0.56$ nsec, $\ensuremath{\tau}(6d^{2}D_{\frac{5}{2}})=5.56\ifmmode\pm\else\textpm\fi{}0.34$ nsec, and $\ensuremath{\tau}(6d^{2}D_{\frac{3}{2}})=4.99\ifmmode\pm\else\textpm\fi{}0.33$ nsec.
Lifetimes of 13 upper states of optical-resonance transitions in selected metal atoms have been measured using the phase-shift method. Data were taken over a range of at least 12 of fluorescence intensity, to take into account the effects of radiation entrapment and exciting light scattering. The following results were obtained: Na 3p2P0 16.2 nsec, Tl 7s ²S12 7.65 nsec, Tl 6d²D32 6.9 nsec, In 6s ²S12 7.5 nsec, In 5d ²D32 7.9 nsec, In 5d ²D52 7.9 nsec, Ga 5s ²S12 7.6 nsec, Ga 4d2D 7.7 nsec, Cu 4p2P0 7.2 nsec, Ag 5p ²P120 6.7 nsec, Ag 5p ²P120 7.5 nsec, Pb 7s3P10 6.05 nsec, and Bi 7s ⁴P12 5.9 nsec. Estimated absolute accuracies vary between 3 and 7%.