| DOI | Trouver le DOI : https://doi.org/10.1016/j.jms.2013.05.013 |
|---|
| Auteur | Rechercher : Rezaei, M.; Rechercher : Michaelian, K. H.; Rechercher : Mckellar, A. R. W.1; Rechercher : Moazzen-Ahmadi, N. |
|---|
| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
|
|---|
| Format | Texte, Article |
|---|
| Sujet | dimer; direct measurement; fundamental bands; hindered internal rotations; infrared spectrum; rotational constants; supersonic jets; tunneling splittings; vibrational shift; argon; ethylene; neon; quantum cascade lasers; spectroscopy; supersonic aerodynamics; van der Waals |
|---|
| Résumé | Spectra of Ne─C₂D₄ and Ar─C₂D₄ are studied in the ν11 fundamental band region of C₂D₄ (≈2200 cm⁻¹) using a tuneable quantum cascade laser to probe a pulsed supersonic slit jet expansion. The spectra are those of perpendicular bands of near-prolate asymmetric rotors, but with a doubling of transitions due to tunneling. These tunneling splittings are due to hindered internal rotation of C₂D₄ around its C─C axis, and are more prominent for Ne─C₂D₄ than for Ar─C₂D₄. The analysis yields the first direct measurement of the A rotational constants for these complexes, and shows that the vibrational shifts are very small (<0.3 cm⁻¹). Attempts to observe the spectrum of He─C₂D₄ were not successful. |
|---|
| Date de publication | 2013-06-07 |
|---|
| Maison d’édition | Elsevier |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Identificateur | S0022285213000854 |
|---|
| Numéro NPARC | 23000548 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 4c4013d8-bc29-4e8b-bc55-fddbbcfd7964 |
|---|
| Enregistrement créé | 2016-07-29 |
|---|
| Enregistrement modifié | 2020-09-08 |
|---|
