The millimeter-wave spectrum of methane

The millimeter-wave spectrum of methane consists mainly of rotational and rovibrational transitions in the ν 2 ν 4 dyad. A complete prediction of this spectrum has been obtained, including frequencies with a standard deviation of better than 1 MHz and absolute strengths with an estimated precision o...

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Bibliographic Details
Published inJournal of molecular spectroscopy Vol. 122; no. 2; pp. 381 - 389
Main Authors Hilico, J.C., Loete, M., Champion, J.P., Destombes, J.L., Bogey, M.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.04.1987
Elsevier
Subjects
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Radio-frequency and microwave spectra
Methane
Diode
Hydrocarbon
Saturated aliphatic compound
Rotational transition
Microwave spectrum
Theoretical study
Experimental study
Organic compounds
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Summary:The millimeter-wave spectrum of methane consists mainly of rotational and rovibrational transitions in the ν 2 ν 4 dyad. A complete prediction of this spectrum has been obtained, including frequencies with a standard deviation of better than 1 MHz and absolute strengths with an estimated precision of about 20%. The first experimental observation of 14 lines of 12CH 4 between 120 and 268 GHz has been obtained using an rf discharge in methane-helium mixtures cooled to liquid-nitrogen temperatures.
ISSN:0022-2852
1096-083X
DOI:10.1016/0022-2852(87)90013-0