Second sound waves in orthodeuterium, parahydrogen quantum crystals and neon crystals

The possibility of second sound wave propagation in isotopic pure ideal single crystals of orthodeuterium, parahydrogen, and neon is studied. The same collision frequencies as those used in Callaway’s model to describe experimental data on thermal conductivity are used to find the region of existenc...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2009-05, Vol.35 (5), p.349-355
Main Authors: Khodusov, V. D., Blinkina, A. A.
Format: Article
Language:English
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Summary:The possibility of second sound wave propagation in isotopic pure ideal single crystals of orthodeuterium, parahydrogen, and neon is studied. The same collision frequencies as those used in Callaway’s model to describe experimental data on thermal conductivity are used to find the region of existence of second-sound waves, which lies in the region of the maximum value of the thermal conductivity. The concentrations of the isotopes H 1 , D 2 , and Ne 22 below which weakly damped second sound waves can exist are determined. It is important to take account of phonon scattering by the boundaries of the sample.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.3130962