Self and N2 broadening coefficients of H2S ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Self and N2 broadening coefficients of H2S probed by submillimeter spectroscopy: Comparison with IR measurements and semi-classical calculations
Auteur(s) :
Mouelhi, Meriem [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Cuisset, A. [Auteur correspondant]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Jellali, C. [Auteur]
Galalou, S. [Auteur]
Aroui, H. [Auteur]
Bocquet, Robin [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Mouret, Gaël [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Rohart, F. [Auteur]
Physique Moléculaire aux Interfaces [PMI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Hindle, Francis [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Cuisset, A. [Auteur correspondant]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Jellali, C. [Auteur]
Galalou, S. [Auteur]
Aroui, H. [Auteur]
Bocquet, Robin [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Mouret, Gaël [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Rohart, F. [Auteur]
Physique Moléculaire aux Interfaces [PMI]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Hindle, Francis [Auteur]
Laboratoire de Physico-Chimie de l'Atmosphère [LPCA]
Titre de la revue :
Journal of Quantitative Spectroscopy and Radiative Transfer
Pagination :
106955
Éditeur :
Elsevier
Date de publication :
2020-05
ISSN :
0022-4073
Mot(s)-clé(s) en anglais :
Semi-classical calculation
Rotational dependencies
Broadening coefficients
H2S
Submillimeter-wave spectroscopy
Speed-dependence effects
Rotational dependencies
Broadening coefficients
H2S
Submillimeter-wave spectroscopy
Speed-dependence effects
Discipline(s) HAL :
Physique [physics]
Résumé en anglais : [en]
High-resolution lines of H2S self-perturbed and perturbed by N2 have been recorded at room temperature using a frequency modulated THz spectrometer at pressures of H2S ranging from 0.1 to 1.0 mbar. A non-linear least squares ...
Lire la suite >High-resolution lines of H2S self-perturbed and perturbed by N2 have been recorded at room temperature using a frequency modulated THz spectrometer at pressures of H2S ranging from 0.1 to 1.0 mbar. A non-linear least squares fitting of these spectra has been performed to retrieve self- and N2-broadening coefficients of pure rotational transitions (mainly in the RQ sub-branch) of H2S in the submillimeter region. We show that the lineshapes are well reproduced by the Speed-Dependent Voigt profile accounting for the speed dependence of relaxation rates which display linear pressure dependencies. Using the Robert and Bonamy formalism, these coefficients were calculated, showing the need to account for all contributions of the intermolecular interaction for N2-broadening. The calculated coefficients are consistent with the measured data and the average accuracy of the line parameters has been estimated to be about 5%. The observed J″ and Ka″ rotational dependences have been analyzed using an empirical model and compared to previous rovibrational studies in the ν2 fundamental band. In our study the self- and the N2-broadening coefficients decreases monotonically with Ka″ and J″, respectively.Lire moins >
Lire la suite >High-resolution lines of H2S self-perturbed and perturbed by N2 have been recorded at room temperature using a frequency modulated THz spectrometer at pressures of H2S ranging from 0.1 to 1.0 mbar. A non-linear least squares fitting of these spectra has been performed to retrieve self- and N2-broadening coefficients of pure rotational transitions (mainly in the RQ sub-branch) of H2S in the submillimeter region. We show that the lineshapes are well reproduced by the Speed-Dependent Voigt profile accounting for the speed dependence of relaxation rates which display linear pressure dependencies. Using the Robert and Bonamy formalism, these coefficients were calculated, showing the need to account for all contributions of the intermolecular interaction for N2-broadening. The calculated coefficients are consistent with the measured data and the average accuracy of the line parameters has been estimated to be about 5%. The observed J″ and Ka″ rotational dependences have been analyzed using an empirical model and compared to previous rovibrational studies in the ν2 fundamental band. In our study the self- and the N2-broadening coefficients decreases monotonically with Ka″ and J″, respectively.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Projet ANR :
Source :
Fichiers
- https://hal.archives-ouvertes.fr/hal-03489669/document
- Accès libre
- Accéder au document
- https://hal.archives-ouvertes.fr/hal-03489669/document
- Accès libre
- Accéder au document
- document
- Accès libre
- Accéder au document
- S0022407320300741.pdf
- Accès libre
- Accéder au document