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Far-infrared spectrum of solid methane: phases III and IV

✍ Scribed by B.W. Baran; F.D. Medina

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
414 KB
Volume
176
Category
Article
ISSN
0009-2614

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✦ Synopsis

The far-infrared spectrum of phases III and IV of solid CH4 have been investigated. Five bands were observed in phase III. Discontinuous changes in the linewidths and the emergence of a new band arc associated with the transition to phase IV. On the basis of the measured Griineisen parameters, the band around 49 cm-' in phase III was identified as a librational mode and all the others as translational modes. The present results are consistent with a PJJmbc structure for phase III.

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