| DOI | Trouver le DOI : https://doi.org/10.1021/jp312337v |
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| Auteur | Rechercher : Rezaei, Mojtaba; Rechercher : Sheybani-Deloui, S.; Rechercher : Moazzen-Ahmadi, N.; Rechercher : Michaelian, K. H.; Rechercher : McKellar, A. R. W.1 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Sujet | Broad bands; Infrared spectrum; Intermolecular vibrations; Rotational levels; Rotational temperature; Splittings; Supersonic jet expansion; Very low frequency; Isomers; Quantum cascade lasers; Supersonic aerodynamics; Spectroscopy |
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| Résumé | A broad-band (2135-2200 cm-¹) infrared spectrum of the CO dimer is recorded using a tunable quantum cascade laser to probe a supersonic jet expansion with an effective rotational temperature of about 2.5 K. Analysis of the spectrum reveals the first known levels of the excited state (vCO = 1) with A+ symmetry and establishes that resonant vibrational splittings are small (<0.2 cm-¹) for both the C-bonded and O-bonded dimer isomers. The spectrum extends over a surprisingly large range, with somewhat reduced intensity above 2150 cm-¹. A total of 28 new "stacks" of rotational levels having A- symmetry are assigned for vCO = 1 on the basis of combination differences, adding to the 8 stacks previously known, and extending up to 51 cm-¹ above the vCO = 1 origin. Assignments are given for the first 13 stacks of vCO = 1 in terms of the very low frequency geared bending intermolecular vibration. |
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| Date de publication | 2013-02-15 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270504 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | d0af8ec1-51fa-4f6c-b32d-b0487dbbe041 |
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| Enregistrement créé | 2014-02-14 |
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| Enregistrement modifié | 2020-04-22 |
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