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Quasi-diffusion between phonon and roton gases in two- and three-dimensional liquid helium

Quasi-diffusion between phonon and roton gases in two- and three-dimensional liquid helium Temperature variations of the quasi-diffusion constant and thermal diffusion ratio between phonon and roton gases in two- and three-dimensional liquid helium are evaluated explicitly through the scattering of phonons by rotons. The diffusion constants in both dimensions decrease exponentially over the whole temperature range, while the thermal diffusion ratios increase and then decrease as temperature increases in the range from ∼0.6 to ∼1.1 K. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Quasi-diffusion between phonon and roton gases in two- and three-dimensional liquid helium

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References (15)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00682109
Publisher site
See Article on Publisher Site

Abstract

Temperature variations of the quasi-diffusion constant and thermal diffusion ratio between phonon and roton gases in two- and three-dimensional liquid helium are evaluated explicitly through the scattering of phonons by rotons. The diffusion constants in both dimensions decrease exponentially over the whole temperature range, while the thermal diffusion ratios increase and then decrease as temperature increases in the range from ∼0.6 to ∼1.1 K.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Nov 6, 2004

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