| Autre titre | Infrared spectra of N2O-4He, N2O-3He, and OCS-3He complexes |
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| DOI | Trouver le DOI : https://doi.org/10.1063/1.1493191 |
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| Auteur | Rechercher : Tang, Jian1; Rechercher : McKellar, A. R. W.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Résumé | Infrared spectra of the weakly bound complexes N₂O-⁴He, N₂O-³He, and OCS-³He have been observed using a tunable diode laser to probe a pulsed supersonic jet expansion. The rotational structure of the bands was analyzed using a conventional asymmetric rotor Hamiltonian. The N₂O-³He and OCS-³He spectra are mostly a type (ΔKa=0) in structure, with very weak b-type (ΔKa = ±I ) transitions, but for N₂O-⁴He the a- and b-type components are both prominent. The fitted rotational parameters are consistent with roughly T-shaped structures with intermolecular separations around 3.4-3.5 Å for N₂O-He and 3.8-3.9 Å for OCS-He. The angle between the N₂O or OCS axis and the He position is about 80° for N₂O-He and 65° for OCS-He. The vibrational band origins are slightly blueshifted from those of the free molecule, with the N₂O-He shifts (+0.2 cm⁻¹) being about twice the magnitude of the OCS-He shifts (+0.1 cm⁻¹). The results are of particular interest since N₂O and (especially) OCS have both been used as probes in experiments on ultracold helium nanodroplets. |
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| Date de publication | 2002-07-24 |
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| Maison d’édition | American Institute of Physics |
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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 | 12330218 |
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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 | 23a86bb1-2a80-40cd-8757-2cdc90a8bd59 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-03-30 |
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