| DOI | Resolve DOI: https://doi.org/10.1016/j.jms.2013.05.013 |
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| Author | Search for: Rezaei, M.; Search for: Michaelian, K. H.; Search for: Mckellar, A. R. W.1; Search for: Moazzen-Ahmadi, N. |
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| Name affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | 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 |
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| Abstract | 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. |
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| Publication date | 2013-06-07 |
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| Publisher | Elsevier |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | S0022285213000854 |
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| NPARC number | 23000548 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction |
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| Record identifier | 4c4013d8-bc29-4e8b-bc55-fddbbcfd7964 |
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| Record created | 2016-07-29 |
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| Record modified | 2020-09-08 |
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