NITROUS OXIDE LINE SHAPES IN THE SUB-MILLIMETER REGION: MEASUREMENTS AND THEORY
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Publisher:Ohio State University
The exhaustive study of N$_2$O/N$_2$ (O$_2$, air) rotational transtitions situated in the sub-millimeter wave domain is of a fundamental importance for the reliable interpretation of the experimental data collected by the satellite ODIN (the Swedish-led satellite project supported by Canada, Finland and France). In complement to our recent laboratory measurements near 201, 552 and 577 GHz , new results are obtained with a frequency-modulated spectrometer for the N$_2$O transitions at 502.3 and 602 GHz. The theoretical computations for the collisional line broadening are based on a semiclassical formalism with exact trajectories . The analysis of the line profile is performed with both the classical Voigt model and a speed-dependent Voigt model.\\ \ \\ $\lbrack$1$\rbrack$\ \ \ F. Rohart, J.-M. Colmont, G. Wlodarczak, and J.-P. Bouanich, J. Mol. Spectrosc. 222, 159-171 (2003).\\ $\lbrack$2$\rbrack$\ \ \ J. Buldyreva, J. Bonamy, D. Robert, J. Quant. Spectrosc. Radiat. Transf. 62, 321-343 (1999).
Author Institution: Laboratoire de Physique des Lasers, Atomes et Molecules, UMR CNRS 8523, Universite de Lille 1, 59655 Villeneuve d'Ascq, France; Laboratoire de Physique Moleculaire, UMR CNRS 6624, Universite de Franche-Comte, 16 route de Gray, 25030 Besancon cedex, France
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