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Damping of second sound in superfluid helium near T/sub lambda/

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
The damping coefficient of second sound has been measured in liquid helium at saturated vapor pressure near T/sub lambda/. The results cover the temperature range 40 mK>T/sub lambda/-T>40 ..mu..K, and were obtained by the measurement of decay rates in a high-Q second-sound resonant cavity. These values are in good agreement with the predictions of nonlinear renormalization-group analysis applied to the asymmetric planar spin model for liquid helium in the ''crossover'' and precritical temperature ranges.
Research Organization:
Department of Physics, University of British Columbia, Vancouver, British Columbia, V6T2A6 Canada
OSTI ID:
5938833
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 27:9; ISSN PRBMD
Country of Publication:
United States
Language:
English

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