DOI: 10.1063/1.1673149. Vibrational Deactivation in Methane Mixtures

Vibrational Deactivation in Methane Mixtures

10.1063/1.1673149

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The vibrational relaxation of the bending modes of CH4 in mixtures with rare gases and diatomic molecules has been studied by laser-excited vibrational fluorescence. The measured energy transfer probabilities cannot be understood, even qualitatively, in terms of simple theories of either vibration-to-translation energy transfer or vibration-to-rotation energy transfer. The data indicate that vibrational energy is transferred into translation, methane rotation, and collision partner rotation. The relative distribution among these degrees of freedom appears to vary greatly among the collision partners studied. Ethane was found to be an efficient catalyst for the vibrational relaxation of CH4. Since it is one of the major impurities in methane samples, this observation explains why some authors have observed relaxation times for “pure” CH4 less than 2 μsec·atm.

Bibliography

Yardley, J. T., Fertig, M. N., & Moore, C. B. (1970). Vibrational Deactivation in Methane Mixtures. The Journal of Chemical Physics, 52(3), 1450â1453.

Authors 3

James T. Yardley (first)
Margaret N. Fertig (additional)
C. Bradley Moore (additional)

References 25 Referenced 78

10.1039/TF9625802336 / Trans. Faraday Soc. (1962)
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10.1063/1.1670798 / J. Chem. Phys. (1969)
10.1063/1.1670199 / J. Chem. Phys. (1968)
{'key': '2024020906081167100_r5'}
10.1063/1.1696952 / J. Chem. Phys. (1965)
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10.1515/zpch-1940-4612 / Z. Physik. Chem. (1940)
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10.1063/1.1699597 / J. Appl. Phys. (1950)
{'key': '2024020906081167100_r12', 'first-page': '940', 'volume': '72A', 'year': '1958', 'journal-title': 'Proc. Phys. Soc. (London)'} / Proc. Phys. Soc. (London) (1958)
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Dates

Type	When
Created	21 years, 6 months ago (Feb. 6, 2004, 2:23 p.m.)
Deposited	1 year, 6 months ago (Feb. 9, 2024, 1:34 a.m.)
Indexed	1 year, 4 months ago (April 17, 2024, 7:12 p.m.)
Issued	55 years, 6 months ago (Feb. 1, 1970)
Published	55 years, 6 months ago (Feb. 1, 1970)
Published Print	55 years, 6 months ago (Feb. 1, 1970)

Funders 0

None

BibTeX

@article{Yardley_1970, title={Vibrational Deactivation in Methane Mixtures}, volume={52}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1673149}, DOI={10.1063/1.1673149}, number={3}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Yardley, James T. and Fertig, Margaret N. and Moore, C. Bradley}, year={1970}, month=feb, pages={1450–1453} }

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