The Kapitza resistance at metal-helium interfaces

The Kapitza resistance has been measured between liquid or solid 3He or 4He and surfaces of Mg, Cu, W, and Au in the temperature range 0.03-0.3 K. The experimental data are in relatively good agreement with the acoustic mismatch theory modified so as to include phonon attenuation in the metal. Below 0.1 K the Kapitza resistance of liquid 3He is often reduced relative to that of liquid 4He , suggesting the presence of an enhanced thermal conductance between liquid 3He and metals, as has been observed in other laboratories. Measurements of the Kapitza resistance have also been made at liquid and solid 4He - Cu interfaces and at solid Ne-Cu interfaces at 0.4 - 1.2 K. The results show that the resistances at both liquid and solid He-Cu interfaces at these temperatures are anomalously low, but that the Ne-Cu boundary resistance may be adequately explained by the acoustic mismatch theory.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Year dc:date

2012

Author dc:creator

• Folinsbee, James Terwillegar

Contributors dc:contributor

• Anderson, A.C.

• Kapitza resistance
• metal-helium interfaces

Statement dc:rights

• ©1974 Folinsbee

Language dc:language

en

Identifier

1960453

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/30397