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Two-phonon Raman scattering of light in rare gas crystals

✍ Scribed by John G. Leese; G. K. Horton

Publisher
Springer US
Year
1979
Tongue
English
Weight
585 KB
Volume
35
Category
Article
ISSN
0022-2291

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✦ Synopsis

In this paper we calculate the two-phonon efficiency for light scattering from rare gas crystals at all temperatures. We use a Lennard-Jones potential and.the Lorentz-Lorenz model following previous theoretical work and use the firstorder self-consistent phonon theory, supplemented by a simple model giving the phonon anharmonic widths and shifts. Our results, though larger than the experimental results, agree well with earlier calculations at 0 K and related molecular dynamics work. The calculated spectra show a rich structure that varies with temperature. We suggest that further experiments could lead to significant new insights into the nature of excitations in rare gas solids as a fimction of temperature.

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