Finite-size effects on the thermal conductivity of He4 near the superfluid transition

Guenter Ahlers; Robert V. Duncan

doi:10.1103/PhysRevLett.61.846

Finite-size effects on the thermal conductivity of He4 near the superfluid transition

Guenter Ahlers, Robert V. Duncan

Physics

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

We report new high-resolution measurements of the thermal conductivity very near the superfluid-transition temperature T on a thicker sample (0.57 cm) than had been used previously (0.22 cm) by Lipa and Chui (LC). Our results deviate less from the conductivity expected for a bulk sample than do the LC data. Our data, the results of LC, and previous measurements on a 0.0025-cm-thick sample are consistent with a simple phenomenological model for the effect of the solid boundaries uponz.

Original language	English
Pages (from-to)	846-848
Number of pages	3
Journal	Physical Review Letters
Volume	61
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.61.846
State	Published - 1988

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abstract = "We report new high-resolution measurements of the thermal conductivity very near the superfluid-transition temperature T on a thicker sample (0.57 cm) than had been used previously (0.22 cm) by Lipa and Chui (LC). Our results deviate less from the conductivity expected for a bulk sample than do the LC data. Our data, the results of LC, and previous measurements on a 0.0025-cm-thick sample are consistent with a simple phenomenological model for the effect of the solid boundaries uponz.",

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AU - Duncan, Robert V.

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N2 - We report new high-resolution measurements of the thermal conductivity very near the superfluid-transition temperature T on a thicker sample (0.57 cm) than had been used previously (0.22 cm) by Lipa and Chui (LC). Our results deviate less from the conductivity expected for a bulk sample than do the LC data. Our data, the results of LC, and previous measurements on a 0.0025-cm-thick sample are consistent with a simple phenomenological model for the effect of the solid boundaries uponz.

AB - We report new high-resolution measurements of the thermal conductivity very near the superfluid-transition temperature T on a thicker sample (0.57 cm) than had been used previously (0.22 cm) by Lipa and Chui (LC). Our results deviate less from the conductivity expected for a bulk sample than do the LC data. Our data, the results of LC, and previous measurements on a 0.0025-cm-thick sample are consistent with a simple phenomenological model for the effect of the solid boundaries uponz.

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DO - 10.1103/PhysRevLett.61.846

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Finite-size effects on the thermal conductivity of He4 near the superfluid transition

Abstract

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