Thermal relaxation calorimetry below 1 K
1974; American Institute of Physics; Volume: 45; Issue: 4 Linguagem: Inglês
10.1063/1.1686682
ISSN1527-2400
Autores Tópico(s)Thermodynamic and Structural Properties of Metals and Alloys
ResumoThe thermal relaxation method is used to measure heat capacities of small samples from 0.060 to 1.2 K. The calorimeter incorporates a low heat capacity holder, and is designed to be used in conjunction with a 3He–4He dilution refrigerator. The accuracy was checked by measuring a 2 g copper sample. A least squares fit of the copper data yields a γ value of 0.688 mJ (K2g at.)−1 which agrees to 1.0% with published values of γ for copper. The data exhibit a standard deviation of 5.6% around the fit.
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