LINE-MIXING EFFECTS IN $\Sigma-\Pi$ Q-BRANCHES OF $CO_{2}$. TEMPERATURE, PRESSURE, AND PERTURBER DEPENDENCIES
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Date
1996
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Ohio State University
Abstract
Line-mixing effects in two infrared $CO_{2}$ Q-branches of $\Sigma\leftarrow\Pi$ vibrational symmetry near 15 $\mu$m mixed with He, Ar, $N_{2}$ and $O_{2}$ have been studied over a wild range of temperature (200$\rightarrow$300 K) and pressure (0.5$\rightarrow$10 bars). A full analyzis of the perturbers influence on line-mixing within the Q-branch has been made using the recent formabism developed by L. $Bonamy^{4}$ and al. accounting for the rotational angular momentum relaxation mechanism. The correct agreements obtained in spectra computations show the validity of the model.
Description
$^{1}$ Laboratoire de Physique Mol\'{e}culaire et Applications, United propre du CNRS (UPR 136) ascoci\'{e}e, Universit\'{e}s Paris-Sud et P. \& M. Curie, Universit\'{e} Paris-Sud (bxit, 350), 91405 Orssy Cedex, France. $^{2}$ Department de Physique Atomique et Mol\'{e}cularies, U.R.A. CNRS 1203, Universit\'{e} de Rennes 1, Campus Beaulion, 35042. Rennes Cedex France. $^{3}$ Laboratoire de Physique Mol\'{e}cularire, U.R.A. CNRS 772, Universit\'{e} de Francho-Comt\'{e}, La Bonlole 25030 Besancom Cedex, France. $^{4}$ L. Bonumy and F. Emond, ``Rotational-angular-momentum relaxation mechanisms in the energy-corrected-sudden scaling theory'', Phys. Rev. A 51, 1235-1240 (1995).
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