Skip to Main content Skip to Navigation
Journal articles

Collisional line broadening and mixing in the Raman spectrum of CO perturbed by N2: Experimental measurements and theoretical calculations

Abstract : We present a joint experimental and theoretical study of line broadening and mixing in the Q branch of the Raman spectrum of CO perturbed by N2 at 77, 195 and 298 K. Advanced methods and facilities have been used for both aspects of the study: the experiments were conducted using a high-resolution stimulated Raman spectroscopy setup, while the calculations were performed using a quantum dynamical formalism and one of the most recent potential energy surfaces available. Line broadening coefficients were determined experimentally for rovibrational lines up to j=11 at 77 K, j=15 at 195 K and j=19 at 298 K, and calculated for lines up to j=6 at the three temperatures. Line mixing was also observed and coefficients measured for lines up to j=8 at 77 K and j=5 at 195 K, and again calculated up to j=6 at the three temperatures. A comparison shows an overall very good agreement between experiments and calculations for both sets of coefficients. Additional calculated data for the pure rotational R and S lines are also provided.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03334306
Contributor : Laurent Jonchère Connect in order to contact the contributor
Submitted on : Wednesday, September 15, 2021 - 4:32:58 PM
Last modification on : Wednesday, September 15, 2021 - 4:33:07 PM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2022-02-04

Please log in to resquest access to the document

Identifiers

Citation

D. Paredes-Roibás, R.Z. Martínez, H. Jóźwiak, Franck Thibault. Collisional line broadening and mixing in the Raman spectrum of CO perturbed by N2: Experimental measurements and theoretical calculations. Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2021, 275, pp.107868. ⟨10.1016/j.jqsrt.2021.107868⟩. ⟨hal-03334306⟩

Share

Metrics

Record views

65