Journal of the Optical Society of America

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

Paul T. Cunningham

Published Nov 1, 1968• 10 citations

Abstract

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.

DOI: 10.1364/josa.58.001507

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

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Journal of the Optical Society of AmericaAug 1, 196787 citations

Measurement of the Radiative Lifetimes of the First Excited States of Na, K, Rb, and Cs by Means of the Phase-Shift Method*

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

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

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Fast-beam laser lifetime measurements of the cesium 6p2P1/2,3/2 states

Robert J. Rafac, Carol E. Tanner, A. E. Livingston +1 more

Physical Review ANov 1, 199992 citations

Journal of the Optical Society of America

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

Paul T. Cunningham

Published Nov 1, 1968• 10 citations

Publisher

Abstract

DOI: 10.1364/josa.58.001507

Related papers

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%.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 AmericaAug 1, 196787 citations

Measurement of the Radiative Lifetimes of the First Excited States of Na, K, Rb, and Cs by Means of the Phase-Shift Method*

John K. Link

Journal of the Optical Society of AmericaSep 1, 1966157 citations

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

Journal of the Optical Society of AmericaApr 1, 197722 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

Journal of the Optical Society of AmericaMay 1, 197635 citations

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 XThe 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

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Fast-beam laser lifetime measurements of the cesium 6p2P1/2,3/2 states

Robert J. Rafac, Carol E. Tanner, A. E. Livingston +1 more

We provide a detailed description of our fast-beam laser lifetime measurements in atomic cesium. Selective excitation of the neutral ${}^{133}\mathrm{Cs}$ $6p{}^{2}{P}_{1/2}$ and $6p{}^{2}{P}_{3/2}$ states is accomplished with resonant diode laser light directed transversely to the atomic velocity. The in-flight decay of the excited-state fluorescence is observed with a position-correlated single photon-counting detector. The Doppler-shifted $6p{}^{2}{P}_{3/2}$ resonance, when probed with longitudinally propagating laser radiation, provides a precise means for determination of the beam velocity, and converts the position scale to a time scale. Our lifetime results are $35.07\ifmmode\pm\else\textpm\fi{}0.10 \mathrm{ns}$ for the $6p{}^{2}{P}_{1/2}$ state and $30.57\ifmmode\pm\else\textpm\fi{}0.07 \mathrm{ns}$ for the $6p{}^{2}{P}_{3/2}$ state. These results represent a data set larger than in our previous work, and include beam divergence corrections which have been evaluated by two different methods. We present comparisons of our results with previous measurements and with relativistic many-body calculations of atomic transition matrix elements in this neutral alkali system.We provide a detailed description of our fast-beam laser lifetime measurements in atomic cesium. Selective excitation of the neutral ${}^{133}\mathrm{Cs}$ $6p{}^{2}{P}_{1/2}$ and $6p{}^{2}{P}_{3/2}$ states is accomplished with resonant diode laser light directed transversely to the atomic velocity. The in-flight decay of the excited-state fluorescence is observed with a position-correlated single photon-counting detector. The Doppler-shifted $6p{}^{2}{P}_{3/2}$ resonance, when probed with longitudinally propagating laser radiation, provides a precise means for determination of the beam velocity, and converts the position scale to a time scale. Our lifetime results are $35.07\ifmmode\pm\else\textpm\fi{}0.10 \mathrm{ns}$ for the $6p{}^{2}{P}_{1/2}$ state and $30.57\ifmmode\pm\else\textpm\fi{}0.07 \mathrm{ns}$ for the $6p{}^{2}{P}_{3/2}$ state. These results represent a data set larger than in our previous work, and include beam divergence corrections which have been evaluated by two different methods. We present comparisons of our results with previous measurements and with relativistic many-body calculations of atomic transition matrix elements in this neutral alkali system.

Physical Review ANov 1, 199992 citations

We provide a detailed description of our fast-beam laser lifetime measurements in atomic cesium. Selective excitation of the neutral

{}^{133}\mathrm{Cs}

6p{}^{2}{P}_{1/2}

and

6p{}^{2}{P}_{3/2}

states is accomplished with resonant diode laser light directed transversely to the atomic velocity. The in-flight decay of the excited-state fluorescence is observed with a position-correlated single photon-counting detector. The Doppler-shifted

6p{}^{2}{P}_{3/2}

resonance, when probed with longitudinally propagating laser radiation, provides a precise means for determination of the beam velocity, and converts the position scale to a time scale. Our lifetime results are $35.07\ifmmode\pm\else\textpm\fi{}0.10 \mathrm{ns}$ for the

6p{}^{2}{P}_{1/2}

state and $30.57\ifmmode\pm\else\textpm\fi{}0.07 \mathrm{ns}$ for the

6p{}^{2}{P}_{3/2}

state. These results represent a data set larger than in our previous work, and include beam divergence corrections which have been evaluated by two different methods. We present comparisons of our results with previous measurements and with relativistic many-body calculations of atomic transition matrix elements in this neutral alkali system.