ANALYSIS OF 2$\nu_{4}$ OF $CH_{4}$
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Date
1975
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Journal ISSN
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Publisher
Ohio State University
Abstract
Spectra of the 2$\nu_{4}$ overtone of methane, measured at $100^{\circ} K$ and room temperature, were analyzed using the third-order theory of $Fox^{1}$ for scalar perturbations and the formalism of Moret-$Bailly,^{2}$ with appropriate modifications, for tensor perturbations and resultant tetrahedral fine-structure splittings. Theory and experiment were in qualitatively good agreement from 2520 to 2610 $cm^{-1}$. New values for excited-state molecular constants were determined. From measured line intensities, a band intensity of (7.50 $\pm$ 0.97) $\times$ 10$^{-20}$ $cm^{-1}$ (molec. $cm^{-2}$)$^{-1}$ at STP was theoretically projected. Transition dipole moments were evaluated, and their quantum-number dependence was investigated.
Description
$^{1}$ K. Fox, J. Mol. Spectrosc. 9, 381 (1962). $^{2}$ J. Moret-Bailly, Can. Phys. 15, 237 (1961). This research was supported, in part, by the U.S. Air Force Cambridge Research Laboratories. Portions of this research were presented by R. J. Corice, JR., to the Graduate Council of The University of Tennessee, Knoxville, in partial fulfillment of the requirements for the degree Master of Science. Present address of R. J. Corice, JR.: Hinds Junior College, Raymonds, Mississippi, 39154.""
Author Institution: University of Tennessee Hinds Junior College,; University of Dijon
Author Institution: University of Tennessee Hinds Junior College,; University of Dijon