Abstract
Cavity ring down spectroscopy is used for measurement of the concentration profiles of oxygen in the low pressure (30 Torr) methane/nitrogen/oxygen flames. Three different equivalence ratios are used: 0.8, 1.0 and 1.17. Molecular oxygen concentration is monitored via rotational spectrum of b1 Σ g +←X3 Σ g - (v′=0-v′′=0) transition, also known as atmospheric A band, located near 750 nm. The P(15)P(15) line is used for concentration measurements. The sensitivity reached is 2.2×10-8 cm-1. The concentration profiles are in a good agreement with the ones calculated using GRI-3.0 mechanism.
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33.20.Kf; 33.70.Fd; 42.60.Da
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Goldman, A., Rahinov, I. & Cheskis, S. Molecular oxygen detection in low pressure flames using cavity ring-down spectroscopy. Appl. Phys. B 82, 659–663 (2006). https://doi.org/10.1007/s00340-005-2122-9
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DOI: https://doi.org/10.1007/s00340-005-2122-9