Bulletin of the American Physical Society

Sensitive Investigation of Radiation Trapping in an Atomic Vapor using the Hanle Effect

J. L. McHugh, R Yarkony David, Burch Peter, Michael McClimans, Ronald W. Stites, Samir Bali

Published Apr 8, 2005• 0 citations

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Bulletin of the American Physical Society

Sensitive Investigation of Radiation Trapping in an Atomic Vapor using the Hanle Effect

J. L. McHugh, R Yarkony David, Burch Peter, Michael McClimans, Ronald W. Stites, Samir Bali

Published Apr 8, 2005• 0 citations

OpenAlex

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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text S. Bali, R. Stites, J. McHugh, P. Burch, D. Rench, and M. McClimans, "Investigation of Radiation Trapping in an Atomic Vapor Using the Hanle Effect," in Frontiers in Optics, OSA Technical Digest Series (Optica Publishing Group, 2005), paper JTuC57. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save articleGet PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text S. Bali, R. Stites, J. McHugh, P. Burch, D. Rench, and M. McClimans, "Investigation of Radiation Trapping in an Atomic Vapor Using the Hanle Effect," in Frontiers in Optics, OSA Technical Digest Series (Optica Publishing Group, 2005), paper JTuC57. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

Frontiers in OpticsJan 1, 20050 citations

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Effect of Imprisonment of Radiation in Sodium Vapor on the Measured Lifetime of the 3 P2 States

B P Kibble, G. H. Copley, L. Krause

The effect of imprisonment of radiation in sodium vapor on the measured lifetime of the $3 ^{2}P$ states has been investigated in an experiment in which the atoms in the vapor were excited with 10-nsec pulses of resonance radiation and the elapsed times between the exciting and the fluorescent pulses were recorded using a time-to-amplitude converter and kicksorter. At vapor densities below ${10}^{10}$ atoms/ ${\mathrm{cm}}^{3}$ , where there is no multiple scattering, the measured lifetime reaches a constant value of (1.63\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}8}$ sec, equal to the natural lifetime of the $3 ^{2}P$ states. In the density range ${10}^{9}$ - ${10}^{13}$ atoms/ ${\mathrm{cm}}^{3}$ , the variation of the effective lifetime with the vapor density is in good agreement with the predictions of Milne's theory of radiation trapping; agreement with Holstein's theory is observed only in the range ${10}^{12}$ - ${10}^{13}$ atoms/ ${\mathrm{cm}}^{3}$ . The results of a subsidiary Hanle experiment show that a multiply scattered photon of sodium resonance fluorescence loses its original polarization and that, at high sodium vapor pressure, coherence is not preserved.The effect of imprisonment of radiation in sodium vapor on the measured lifetime of the $3 ^{2}P$ states has been investigated in an experiment in which the atoms in the vapor were excited with 10-nsec pulses of resonance radiation and the elapsed times between the exciting and the fluorescent pulses were recorded using a time-to-amplitude converter and kicksorter. At vapor densities below ${10}^{10}$ atoms/${\mathrm{cm}}^{3}$, where there is no multiple scattering, the measured lifetime reaches a constant value of (1.63\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}8}$ sec, equal to the natural lifetime of the $3 ^{2}P$ states. In the density range ${10}^{9}$-${10}^{13}$ atoms/${\mathrm{cm}}^{3}$, the variation of the effective lifetime with the vapor density is in good agreement with the predictions of Milne's theory of radiation trapping; agreement with Holstein's theory is observed only in the range ${10}^{12}$-${10}^{13}$ atoms/${\mathrm{cm}}^{3}$. The results of a subsidiary Hanle experiment show that a multiply scattered photon of sodium resonance fluorescence loses its original polarization and that, at high sodium vapor pressure, coherence is not preserved.

Physical ReviewJan 5, 1967114 citations

The effect of imprisonment of radiation in sodium vapor on the measured lifetime of the

3 ^{2}P

states has been investigated in an experiment in which the atoms in the vapor were excited with 10-nsec pulses of resonance radiation and the elapsed times between the exciting and the fluorescent pulses were recorded using a time-to-amplitude converter and kicksorter. At vapor densities below

{10}^{10}

atoms/

{\mathrm{cm}}^{3}

, where there is no multiple scattering, the measured lifetime reaches a constant value of (1.63\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}8}$ sec, equal to the natural lifetime of the

3 ^{2}P

states. In the density range

{10}^{9}

{10}^{13}

atoms/

{\mathrm{cm}}^{3}

, the variation of the effective lifetime with the vapor density is in good agreement with the predictions of Milne's theory of radiation trapping; agreement with Holstein's theory is observed only in the range

{10}^{12}

{10}^{13}

atoms/

{\mathrm{cm}}^{3}

. The results of a subsidiary Hanle experiment show that a multiply scattered photon of sodium resonance fluorescence loses its original polarization and that, at high sodium vapor pressure, coherence is not preserved.