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Broadening of the R(0) and P(2) lines in the 13CO fundamental by helium atoms from 300 K down to 12 K: Measurements and comparison with close-coupling calculations

par Thibault, Franck;Mantz, Arlan;Claveau, Ch.;Henry, Albert ;Valentini, Antonio;Hurtmans, Daniel
Référence Journal of Molecular Spectroscopy, 246, 1, page (118-125)
Publication Publié, 2007-11

Article révisé par les pairs

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Résumé :

We present measurements of He-broadening parameters for the R(0) and P(2) lines in the fundamental band of 13CO at different temperatures between 12 K and room temperature. The broadening parameters are determined, taking into account confinement narrowing, by simultaneous least-squares fitting of spectra recorded using a frequency stabilized diode laser spectrometer. The pressure broadening cross sections are deduced and compared to close-coupling calculations and earlier results obtained for rotational transitions of 12CO. © 2007 Elsevier Inc. All rights reserved.