This paper reports on some experiments on the influence of a number of methods of surface treatment on the Kapitza conductance between copper and He 4 at not very low temperatures. Attention is paid to the magnitude, the temperature dependence, and the reproducibility between different samples. The
Influence of dislocations on the Kapitza conductance of copper at temperatures between 1 and 2 K
โ Scribed by K. C. Rawlings; J. C. A. Sluijs
- Book ID
- 104628113
- Publisher
- Springer US
- Year
- 1979
- Tongue
- English
- Weight
- 760 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0022-2291
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โฆ Synopsis
An experiment is described in which the dependence of the Kapitza conductance of copper to He H on the dislocation density near the interface is investigated in the temperature range of 1-2 K. A dependence is found, which has not been reported before, giving support to the dislocation-based theoretical models. The Kapitza conductance for a low-dislocation-density sample is shown to be an order of magnitude below the usual values, and within the range of validity of these theories.
๐ SIMILAR VOLUMES
The reproducibility of measurements of the Kapitza conductance between electropolished copper samples and He 4 has been investigated at temperatures between 1.2 and 20 K. It is shown that the results are sensitive to the vacuum treatment to which the sample is subjected. It appears that after leavin
Using the same experimental methods as in earlier work, studies have been made of the Kapitza conductance between liquid He 4 and clean surfaces of annealed molybdenum and beryllium samples at temperatures between 1 and 2 K. The conductance of molybdenum at 1.5 K is 75 W m "2 K -I and for beryllium
Results are described of a detailed investigation of the Kapitza conductance of clean, high-purity, annealed and electropolished silver samples and heliumfour at temperatures between 1 and 2 K. The values and the temperature dependence of the heat transfer coefficient for deep electropolished sample