Quantitative atomic spectroscopy for primary thermometry

Truong, Gar-Wing, May, Eric F., Stace, Thomas M. and Luiten, André N. (2011) Quantitative atomic spectroscopy for primary thermometry. Physical Review A, 83 3: 033805.1-033805.9. doi:10.1103/PhysRevA.83.033805

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Author Truong, Gar-Wing
May, Eric F.
Stace, Thomas M.
Luiten, André N.
Title Quantitative atomic spectroscopy for primary thermometry
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2011-03
Sub-type Article (original research)
DOI 10.1103/PhysRevA.83.033805
Open Access Status File (Publisher version)
Volume 83
Issue 3
Start page 033805.1
End page 033805.9
Total pages 9
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2012
Language eng
Formatted abstract
Quantitative spectroscopy has been used to measure accurately the Doppler broadening of atomic transitions in Rb85 vapor. By using a conventional platinum resistance thermometer and the Doppler thermometry technique, we were able to determine kB with a relative uncertainty of 4.1×10-4 and with a deviation of 2.7×10-4 from the expected value. Our experiment, using an effusive vapor, departs significantly from other Doppler-broadened thermometry (DBT) techniques, which rely on weakly absorbing molecules in a diffusive regime. In these circumstances, very different systematic effects such as magnetic sensitivity and optical pumping are dominant. Using the model developed recently by Stace and Luiten, we estimate the perturbation due to optical pumping of the measured kB value was less than 4×10-6. The effects of optical pumping on atomic and molecular DBT experiments is mapped over a wide range of beam size and saturation intensity, indicating possible avenues for improvement. We also compare the line-broadening mechanisms, windows of operation and detection limits of some recent DBT experiments. © 2011 American Physical Society.
Keyword Vapor-pressure
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #033805

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 23 times in Scopus Article | Citations
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Created: Sun, 27 Mar 2011, 00:03:08 EST