Collisional line broadening and mixing in the Raman spectrum of CO perturbed by N2: Experimental measurements and theoretical calculations
| Autor: | Hubert Jóźwiak, Denís Paredes-Roibás, Raúl Z. Martínez, Franck Thibault |
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| Přispěvatelé: | Universidad Nacional de Educación a Distancia (UNED), Instituto de Estructura de la Materia (IEM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Nicolaus Copernicus University [Toruń], Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), D. Paredes-Roibás and R. Z. Martínez acknowledge the funding received from Project FIS2017-84391-C2-1-P of Ministerio de Economía y Competitividad. H. Jóźwiak’s contribution is supported by the National Science Centre in Poland through Project No. 2018/31/B/ST2/00720., Ministerio de Economía y Competitividad (España), National Science Centre (Poland), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Stimulated Raman spectroscopy
Quantum dynamics 7. Clean energy 01 natural sciences symbols.namesake 0103 physical sciences Quantum dynamical calculations 010306 general physics Spectroscopy Quantum Mixing (physics) Line (formation) Physics [PHYS]Physics [physics] Collisional broadening Radiation 010304 chemical physics Line mixing Rotational–vibrational spectroscopy Potential energy Atomic and Molecular Physics and Optics symbols Atomic and molecular collisions Atomic physics Raman spectroscopy Molecular physics CO-N2 |
| Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2021, 275, pp.107868. ⟨10.1016/j.jqsrt.2021.107868⟩ Journal of Quantitative Spectroscopy and Radiative Transfer, 2021, 275, pp.107868. ⟨10.1016/j.jqsrt.2021.107868⟩ Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0022-4073 |
| Popis: | 15 pags., 12 figs., 6 tabs. 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 N 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. D. Paredes-Roibás and R. Z. Martínez acknowledge the fund- ing received from Project FIS2017-84391-C2-1-P of Ministerio de Economía y Competitividad. H. Józwiak’s contribution is supporte by the National Science Centre in Poland through Project No. 2018/31/B/ST2/00720. |
| Databáze: | OpenAIRE |
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