✦ LIBER ✦

The phonon absorption line shape of solid molecular H2and D2as a function of density

✍ Scribed by Victor V. Goldman

Publisher: Springer US
Year: 1980
Tongue: English
Weight: 641 KB
Volume: 38-38
Category: Article
ISSN: 0022-2291
DOI: 10.1007/bf00115273

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✦ Synopsis

A theoretical study is presented of the lattice dyhamics of the cubic phases of solid hydrogen and deuterium as a function of density. The calculations are performed in the self-consistent phonon approximation and include cubic three-phonon processes and higher anharmonic corrections. The anisotropic part of the intermolecular potential is neglected and libronic effects are not included. The line shape of the one-phonon far-infrared absorption process is studied in detail and is found to display a complex and interesting behavior as a function of pressure. The experimental absorption line is well accounted for by the one-phonon line shapes calculated here and phonon-libron and multiphonon absorption, which has been treated elsewhere. Phonon dispersion curves and elastic constants are also presented.

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