Low Temperature Physics: 42, 617 (2016); https://doi.org/10.1063/1.4960494
Физика Низких Температур: Том 42, Выпуск 8 (Август 2016), c. 787-791    ( к оглавлению , назад )

A review of surface effects in Kapitza’s experiments on heat transfer between solids and helium II (Review Article)

Jay Amrit

Laboratoire d’Informatique pour la Mécanique et les Sciences de l’Ingénieur, LIMSI-CNRS UPR 3251 Université Paris Sud, Rue John von Neumann, 91405 Orsay, France
E-mail: jay.amrit@limsi.fr

Received April 1, 2016

Аннотация

In a recent paper, it is shown that the thermal boundary Kapitza resistance between a solid and superfluid helium is explained by resonant scattering of phonons from surface roughness heights, as described in the Adamenko and Fuks (AF) model. We reexamine the original experiments of thermal transfer between a solid (platinum and copper) and superfluid helium conducted by P.L. Kapitza in 1940. In particular, we analyze his experimental results for the different surface treatments of the solid in light of the AF model. Time scales for diffuse scattering of phonons at the interface are estimated. Also the role of a layer of varnish on a copper surface is reinterpreted.

PACS: 62.60.+v Acoustical properties of liquids;
PACS: 63.20.kp Phonon-defect interactions.

Ключевые слова: Kapitza thermal resistance, solid-helium interfaces.

Published online: June 25, 2016