Far infrared collision-induced spectrum in gaseous methane. I. Band shape and temperature dependence

The far infrared collision−induced spectrum in CH4 is observed in the region 20−600 cm−1 at temperatures between 163 and 296 K. These results are compared with a synthetic spectrum computed from the theory of Ozier and Fox giving the integrated intensity of the absorption resulting from rotational t...

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Veröffentlicht in:The Journal of chemical physics 1975-01, Vol.62 (1), p.59-62
1. Verfasser: Birnbaum, George
Format: Artikel
Sprache:eng
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Zusammenfassung:The far infrared collision−induced spectrum in CH4 is observed in the region 20−600 cm−1 at temperatures between 163 and 296 K. These results are compared with a synthetic spectrum computed from the theory of Ozier and Fox giving the integrated intensity of the absorption resulting from rotational transitions of the octupole−induced dipole in colliding pairs of molecules. Although such a calculated spectrum accounts for the gross features of the experimental bands, they predict too little absorption in the low and high parts of the band.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.430239