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Proceedings Paper

Line mixing effect on the Q branch shape of v2 CO2 in a He gas
Author(s): R. Le Doucen; M. V. Tonkov
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Paper Abstract

The majority of studies of collision broadening in infrared spectra of molecular gases assumes that observed vibration-rotation bands can be treated as the sum of Lorentz lines. However, it is well known now that line mixing (line coupling) effects cause the deviations from this model picture. This work extends studies of line mixing in the overtone region to the fundamental (nu) 2 CO2 Q branch broadened by He gas. The case of (nu) 2 CO2 gives us the possibility to investigate Q branch shapes including the nearest wings due to a significant intensity of this band. Moreover, this band is not perturbed strongly by the Coriolis interactions, so it is convenient for theoretical studies.

Paper Details

Date Published: 26 January 1994
PDF: 4 pages
Proc. SPIE 2205, 11th Symposium and School on High-Resolution Molecular Spectroscopy, (26 January 1994); doi: 10.1117/12.166232
Show Author Affiliations
R. Le Doucen, Univ. de Rennes I (France)
M. V. Tonkov, St. Petersburg State Univ. (Russia)


Published in SPIE Proceedings Vol. 2205:
11th Symposium and School on High-Resolution Molecular Spectroscopy
Alexander I. Nadezhdinskii; Yu V. Ponomarev; Leonid N. Sinitsa, Editor(s)

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