The ammonia absorption spectrum between 4700 and 5650 cm −1

Cacciani, P.; Čermák, P.; Vander Auwera, J.; Campargue, A.

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.jqsrt.2022.108350

Titre :

The ammonia absorption spectrum between 4700 and 5650 cm −1

Auteur(s) :

Cacciani, P. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Čermák, P. [Auteur]
Department of Experimental Physics [UNIBA Bratislava]
Vander Auwera, J. [Auteur]
Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing [SQUARES]
Campargue, A. [Auteur]
Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] [LIPhy]

Titre de la revue :

Journal of Quantitative Spectroscopy and Radiative Transfer

Pagination :

108350

Éditeur :

Elsevier

Date de publication :

2022-12

ISSN :

0022-4073

Discipline(s) HAL :

Physique [physics]

Résumé en anglais : [en]

Room temperature absorption spectra of ammonia were recorded by high-resolution Fourier transform spectroscopy in the 4700-5600 cm −1 range at four pressures (13, 46, 140, and 304 Pa). Additionally, we use an existing Kitt ...
Lire la suite >Room temperature absorption spectra of ammonia were recorded by high-resolution Fourier transform spectroscopy in the 4700-5600 cm −1 range at four pressures (13, 46, 140, and 304 Pa). Additionally, we use an existing Kitt Peak spectrum to extend the analysis up to 5650 cm −1. In total, 9110 absorption lines with intensity ranging from 1 × 10 −25 to 1.6 × 10 −20 cm/molecule were retrieved, for the two principal isotopologues. Another Kitt Peak spectrum was used to identify 505 15 NH 3 transitions within the experimental line list. The rovibrational assignments of the 14 NH 3 lines relied on the position and intensity agreement with the C2018 theoretical line list (Coles et al. JQSRT 2018;219 199-212) and were validated by the systematic use of Lower State Combination Difference (LSCD) relations. In the process, a number of intensity transfer between nearby transitions were identified. Finally, 6562 transitions were assigned to 61 vibrational bands of the main isotopologue, 14 NH 3 , representing over 99.8% of the C2018 integrated absorption at room temperature in the region. The upper state empirical energy of a total of 2215 rovibrational levels of 14 NH 3 were derived. Most of them are newly reported. The comparison with the current HITRAN2020 list is discussed. A recommended line list for ammonia in natural isotopic abundance is provided for the studied region.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL

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