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

Arin Mizouri; L. Z. Deng; Jack S. Eardley; N. Hendrik Nahler; Eckart Wrede; David Carty

doi:10.1039/c3cp53394h

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

Arin Mizouri
, L. Z. Deng
, Jack S. Eardley
, N. Hendrik Nahler
, Eckart Wrede
, David Carty^*

^*Corresponding author for this work

Institute for Advanced Study in Precision Spectroscopy

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

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.

Original language	English
Pages (from-to)	19575-19579
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	15
Issue number	45
DOIs	https://doi.org/10.1039/c3cp53394h
State	Published - 7 Dec 2013

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

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.",

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T1 - Absolute density measurement of SD radicals in a supersonic jet at the quantum-noise-limit

AU - Mizouri, Arin

AU - Deng, L. Z.

AU - Eardley, Jack S.

AU - Nahler, N. Hendrik

AU - Wrede, Eckart

AU - Carty, David

PY - 2013/12/7

Y1 - 2013/12/7

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84886998721

U2 - 10.1039/c3cp53394h

DO - 10.1039/c3cp53394h

M3 - 文章

C2 - 24145480

AN - SCOPUS:84886998721

SN - 1463-9076

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SP - 19575

EP - 19579

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 45

ER -

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

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