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Kapitza conductance of molybdenum and beryllium between 1 and 2 K

โœ Scribed by A.E. Alnaimi; J.C.A. van der Sluijs

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
315 KB
Volume
15
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

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 24 W m "2 K "I. The respective temperature dependances can be described fairly well by T 1.1 and T 1-2. The results for different samples reproduce reasonably well and the general behaviour is much the same as for the copper and silver samples studied earlier, though some of the effects are rather smaller. On one of the beryllium samples the Kapitza conductance was measured as a function of the liquid pressure up to 2. 75 atm. No significant dependence was found. To our knowledge these materials have not been studied before.

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