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Proceedings Paper

Ammonia and ethene absorption measurements with a tunable CO2-laser-based photoacoustic trace gas detector
Author(s): Simona M. Cristescu; Dan C. Dumitras; Doru C. A. Dutu
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Paper Abstract

During the last years, the development of optical spectroscopic techniques have made possible measurements of weak IR absorption lines of many gases with biological, agricultural and environmental interest. An extracavity configuration for trace gas detection, based on CO2 laser photoacoustic spectroscopy is discussed. We show the use of this system to determine the absorption spectra of ammonia and ethene for diluted absorber-nitrogen mixtures of 13 ppm at 54 different CO2 laser wavelengths. Due to specific features of the experimental system, the result reported in literature present significant differences for some important spectral lines. The measurements were performed at room temperature and atmospheric pressure. In addition,the detection limits of C2H4NH3 and O3 were calculated.

Paper Details

Date Published: 25 February 2000
PDF: 8 pages
Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); doi: 10.1117/12.378194
Show Author Affiliations
Simona M. Cristescu, National Institute for Laser, Plasma and Radiation Physics (Netherlands)
Dan C. Dumitras, National Institute for Laser, Plasma and Radiation Physics (Romania)
Doru C. A. Dutu, National Institute for Laser, Plasma and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 4070:
ALT '99 International Conference on Advanced Laser Technologies
Vladimir I. Pustovoy; Vitali I. Konov, Editor(s)

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