Raman spectrum of solid CH4 in phase II

Abstract
The Raman spectrum of crystalline CH4 in phase II has been obtained. The v1, v2, and v3 bands have been observed as well as two weak bands in the lattice vibration region. The spectrum is found to be consistent with the structure originally proposed by James and Keenan. There is excellent agreement between a theoretical model proposed by Yamamoto and co-workers and the spectra presented here.
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