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Proceedings Paper

Collision narrowing of unresolved H2O doublets
Author(s): Ch. Claveau; Alain Valentin; Victor P. Kochanov; V. N. Saveliev; Leonid N. Sinitsa
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Paper Abstract

About 150 lines of the (nu) 2 band of H2O were measured by Fourier transform spectrometer of Paris VI University, with a spectral resolution of 0.005 cm -1. It was found that some of spectrally unresolved doublets reveal a significant collision line narrowing as the pressure of the buffer gas (N2) increases. Experimental data on such doublet line profiles was processed with a specially developed theory in the hard collision model under the assumption of strong collision line mixing of unresolved doublet lines. The pressure line broadening coefficients also with the line narrowing parameters were obtained. The observed difference in pressure broadening coefficients of the considered doublet (nu) 1 equals 1879.0194 and (nu) 2 equals 1879.0195 cm-1 and nearby singlet lines was explained on the basis of the developed theory.

Paper Details

Date Published: 13 January 1999
PDF: 7 pages
Proc. SPIE 3583, Fifth International Symposium on Atmospheric and Ocean Optics, (13 January 1999); doi: 10.1117/12.336998
Show Author Affiliations
Ch. Claveau, CNRS/Univ. Pierre et Marie Curie (France)
Alain Valentin, CNRS/Univ. Pierre et Marie Curie (France)
Victor P. Kochanov, Institute of Atmospheric Optics (Russia)
V. N. Saveliev, Institute of Atmospheric Optics (Russia)
Leonid N. Sinitsa, Institute of Atmospheric Optics (Russia)

Published in SPIE Proceedings Vol. 3583:
Fifth International Symposium on Atmospheric and Ocean Optics
Vladimir E. Zuev; Gennadii G. Matvienko, Editor(s)

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