| DOI | Resolve DOI: https://doi.org/10.1021/jp312337v |
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| Author | Search for: Rezaei, Mojtaba; Search for: Sheybani-Deloui, S.; Search for: Moazzen-Ahmadi, N.; Search for: Michaelian, K. H.; Search for: McKellar, A. R. W.1 |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | 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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| Abstract | 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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| Publication date | 2013-02-15 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21270504 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d0af8ec1-51fa-4f6c-b32d-b0487dbbe041 |
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| Record created | 2014-02-14 |
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| Record modified | 2020-04-22 |
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