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Two-phonon Raman scattering of light in argon at high temperatures

โœ Scribed by J. G. Leese; G. K. Horton; E. R. Cowley

Publisher
Springer US
Year
1980
Tongue
English
Weight
316 KB
Volume
41
Category
Article
ISSN
0022-2291

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โœฆ Synopsis

The two-phonon Raman spectra of solid argon at 60 K, 22.1 cm 3/mole and at I53.5K, 22.3 cm3/mole are calculated, with phonon frequencies obtained from a calculation in which cubic anharmonicity is included self-consistently and short-range correlations are incorporated. The results are compared with existing molecular dynamics calculations and with experimental measurements. Certain general trends, such as the presence of a two-phonon cutoff and a smoothing out of the features of the spectra, are correctly reproduced, but the calculations predict too low intensity at frequencies around 40 cm-1, between the sum and difference bands.

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