Near-infrared cavity enhanced absorption spectroscopy of hot water and OH in an oven and in flames |
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Authors: | R Peeters G Berden G Meijer |
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Institution: | (1) Department of Molecular and Laser Physics, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands, NL;(2) FOM-Institute for Plasma Physics Rijnhuizen, P.O. Box 1207, 3430 BE Nieuwegein, The Netherlands, NL |
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Abstract: | A compact diode laser operating around 1.5 μm was used to measure cavity enhanced absorption spectra of hot water molecules
and OH radicals in radiative environments under atmospheric conditions. Spectra of air were measured in an oven at temperatures
ranging from 300 K to 1500 K. These spectra contained rovibrational lines from water and OH. The water spectra were compared
to simulations from the HITRAN and HITEMP databases. Furthermore, spectra were recorded in the flame of a flat methane/air
burner and in an oxyacetylene flame produced by a welding torch. The results show that cavity enhanced absorption spectroscopy
provides a sensitive method for rapid monitoring of species in radiative environments.
Received: 22 February 2001 / Revised version: 23 April 2001 / Published online: 7 June 2001 |
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Keywords: | PACS: 07 57 Ty 33 20 Ea |
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