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Absolute density measurement of SD radicals in a supersonic jet at the quantum-noise-limit

Mizouri, A.; Deng, L.; Eardley, J.S.; Nahler, N.H.; Wrede, E.; Carty, D.

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Authors

L. Deng

J.S. Eardley

N.H. Nahler



Abstract

The absolute density of SD radicals in a supersonic jet has been measured down to (1.1 ± 0.1) × 105 cm−3 in a modestly specified apparatus that uses a cross-correlated combination of cavity ring-down and laser-induced fluorescence detection. Such a density corresponds to 215 ± 21 molecules in the probe volume at any given time. The minimum detectable absorption coefficient was quantum-noise-limited and measured to be (7.9 ± 0.6) × 10−11 cm−1, in 200 s of acquisition time, corresponding to a noise-equivalent absorption sensitivity for the apparatus of (1.6 ± 0.1) × 10−9 cm−1 Hz−1/2.

Citation

Mizouri, A., Deng, L., Eardley, J., Nahler, N., Wrede, E., & Carty, D. (2013). Absolute density measurement of SD radicals in a supersonic jet at the quantum-noise-limit. Physical Chemistry Chemical Physics, 15(45), 19575-19579. https://doi.org/10.1039/c3cp53394h

Journal Article Type Article
Publication Date Oct 1, 2013
Deposit Date Oct 18, 2013
Publicly Available Date Mar 29, 2024
Journal Physical Chemistry Chemical Physics
Print ISSN 1463-9076
Electronic ISSN 1463-9084
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 15
Issue 45
Pages 19575-19579
DOI https://doi.org/10.1039/c3cp53394h

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