Canadian Journal of Physics

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

Paul W. Pace, J. B. Atkinson

Published May 15, 1975• 17 citations

Abstract

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.

DOI: 10.1139/p75-117

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Canadian Journal of PhysicsJun 1, 197415 citations

Canadian Journal of Physics

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

Paul W. Pace, J. B. Atkinson

Published May 15, 1975• 17 citations

Publisher

Abstract

DOI: 10.1139/p75-117

Related papers

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

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

Journal of the Optical Society of AmericaApr 1, 197722 citations

Lifetime measurement of the cesium 5D5/22 state

Sebastian Pucher, Philipp Schneeweiß, Arno Rauschenbeutel +1 more

We measure the lifetime of the cesium $5^{2}D_{5/2}$ state using a time-resolved single-photon-counting method. We excite atoms in a hot vapor cell via an electric quadrupole transition at a wavelength of 685 nm and record the fluorescence of a cascade decay at a wavelength of 852 nm. We extract a lifetime of $1353(5)$ ns for the $5{\phantom{\rule{0.16em}{0ex}}}^{2}{D}_{5/2}$ state, in agreement with a recent theoretical prediction. In particular, the observed lifetime is consistent with the literature values of the polarizabilities of the cesium $6P$ states. Our measurement contributes to resolving a long-standing disagreement between a number of experimental and theoretical results.We measure the lifetime of the cesium $5^{2}D_{5/2}$ state using a time-resolved single-photon-counting method. We excite atoms in a hot vapor cell via an electric quadrupole transition at a wavelength of 685 nm and record the fluorescence of a cascade decay at a wavelength of 852 nm. We extract a lifetime of $1353(5)$ ns for the $5{\phantom{\rule{0.16em}{0ex}}}^{2}{D}_{5/2}$ state, in agreement with a recent theoretical prediction. In particular, the observed lifetime is consistent with the literature values of the polarizabilities of the cesium $6P$ states. Our measurement contributes to resolving a long-standing disagreement between a number of experimental and theoretical results.

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Lifetime measurements of cesium 5d2D5/2,3/2 and 11s2S1/2 states using pulsed-laser excitation

Diana DiBerardino, Carol E. Tanner, A. Sieradzan

We report measurements of the $5d{}^{2}{D}_{5/2},$ $5d{}^{2}{D}_{3/2},$ and $11s{}^{2}{S}_{1/2}$ state lifetimes in the ${}^{133}$ Cs atom to be 1281(9), 909(15), and 351(4) ns, respectively. A pulsed-dye laser selectively excites atomic Cs from the ground state, via a single-photon quadrupole transition, to the $5d$ states and, via a two-photon electric dipole transition, to the $11s$ state. A spectrometer-photomultiplier system detects the fluorescence from the decay of interest and a digitizing oscilloscope records the direct output of the photomultiplier. The data are fit to an exponential function to yield a value for the mean lifetime of the selected state.We report measurements of the $5d{}^{2}{D}_{5/2},$ $5d{}^{2}{D}_{3/2},$ and $11s{}^{2}{S}_{1/2}$ state lifetimes in the ${}^{133}$Cs atom to be 1281(9), 909(15), and 351(4) ns, respectively. A pulsed-dye laser selectively excites atomic Cs from the ground state, via a single-photon quadrupole transition, to the $5d$ states and, via a two-photon electric dipole transition, to the $11s$ state. A spectrometer-photomultiplier system detects the fluorescence from the decay of interest and a digitizing oscilloscope records the direct output of the photomultiplier. The data are fit to an exponential function to yield a value for the mean lifetime of the selected state.

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Measurements of the lifetimes of the 7 2 P1/2o and 7 2 P3/2o excited states of thallium

John V. James, Charles C. Wang, Chuan Guo

The lifetimes of the 7 ${\mathrm{}}^{2}$ ${P}_{1/2}^{o}$ and 7 ${\mathrm{}}^{2}$ ${P}_{3/2}^{o}$ states of thallium have been measured for the first time by observing the fluorescence decay following two-photon resonant excitation in an atomic beam. The values obtained for these states are 61.9 and 48.4 ns, respectively, with an uncertainty of 2%. These results are in good quantitative agreement with the calculations of Bardsley and Norcross, which include the effect of core polarizability.The lifetimes of the 7 ${\mathrm{}}^{2}$${P}_{1/2}^{o}$ and 7 ${\mathrm{}}^{2}$${P}_{3/2}^{o}$ states of thallium have been measured for the first time by observing the fluorescence decay following two-photon resonant excitation in an atomic beam. The values obtained for these states are 61.9 and 48.4 ns, respectively, with an uncertainty of 2%. These results are in good quantitative agreement with the calculations of Bardsley and Norcross, which include the effect of core polarizability.

Physical Review AJul 1, 19859 citations

Sensitized Fluorescence in Vapors of Alkali Atoms XIV. Temperature Dependence of Cross Sections for 72P1/2–72P3/2 Mixing in Cesium, Induced in Collisions with Noble Gas Atoms

I. N. Siara, H. S. Kwong, L. Krause

Canadian Journal of PhysicsJun 1, 197415 citations

We measure the lifetime of the cesium

5^{2}D_{5/2}

state using a time-resolved single-photon-counting method. We excite atoms in a hot vapor cell via an electric quadrupole transition at a wavelength of 685 nm and record the fluorescence of a cascade decay at a wavelength of 852 nm. We extract a lifetime of

1353(5)

ns for the

5{\phantom{\rule{0.16em}{0ex}}}^{2}{D}_{5/2}

state, in agreement with a recent theoretical prediction. In particular, the observed lifetime is consistent with the literature values of the polarizabilities of the cesium

6P

states. Our measurement contributes to resolving a long-standing disagreement between a number of experimental and theoretical results.

We report measurements of the

5d{}^{2}{D}_{5/2},

5d{}^{2}{D}_{3/2},

and

11s{}^{2}{S}_{1/2}

state lifetimes in the

{}^{133}

Cs atom to be 1281(9), 909(15), and 351(4) ns, respectively. A pulsed-dye laser selectively excites atomic Cs from the ground state, via a single-photon quadrupole transition, to the

5d

states and, via a two-photon electric dipole transition, to the

11s

state. A spectrometer-photomultiplier system detects the fluorescence from the decay of interest and a digitizing oscilloscope records the direct output of the photomultiplier. The data are fit to an exponential function to yield a value for the mean lifetime of the selected state.

The lifetimes of the 7

{\mathrm{}}^{2}

{P}_{1/2}^{o}

and 7

{\mathrm{}}^{2}

{P}_{3/2}^{o}

states of thallium have been measured for the first time by observing the fluorescence decay following two-photon resonant excitation in an atomic beam. The values obtained for these states are 61.9 and 48.4 ns, respectively, with an uncertainty of 2%. These results are in good quantitative agreement with the calculations of Bardsley and Norcross, which include the effect of core polarizability.