THE RAMAN SPECTRUM OF METHANE
1960; NRC Research Press; Volume: 38; Issue: 10 Linguagem: Inglês
10.1139/p60-135
ISSN1208-6045
Autores Tópico(s)Atmospheric Ozone and Climate
ResumoThe Raman spectrum of CH 4 was obtained with a spectral resolution of ~0.3 cm −1 , and rotational analyses of the ν and ν 2 bands were carried out. The B 0 values obtained from the ν 2 and ν 3 bands are 5.240 ± 0.002 and 5.2406 ± 0.0011 cm −1 , respectively; the value of ν 0 determined from the latter is 1.09403 ± 0.00016 Å. The rotational levels of the ν = 1 state of ν 2 are double with B 1 values of 5.313 and 5.379 cm −1 . The rotational levels of the ν = 1 state of ν 2 do not follow the theoretical formulae exactly; the deviations for the 13 branches observed can be expressed by using three different B 1 values, 5.178, 5.195, and 5.212 cm −1 . The value of ζ 3 is 0.054. The band origins are: ν 1 = 2916.7, ν 2 = 1533.6, and ν 3 = 3018.9 cm −1 .
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