Uniform temperature cooling power of the superfluid Stirling refrigerator |
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| Authors: | A Watanabe G W Swift J G Brisson |
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| Affiliation: | (1) Cryogenic Engineering Laboratory, Massachusetts Institute of Technology, 02139 Cambridge, MA, USA;(2) Condensed Matter and Thermal Physics Group, Los Alamos National Laboratory, 87545 Los Alamos, NM, USA |
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| Abstract: | Uniform temperature cooling power measurements of a superfluid Stirling refrigerator are presented for3He-4He molar concentrations of 5.9%, 17% and 36% and for temperatures between 0.37 K and 1.4 K. The results are compared to an ideal Fermi gas model and to a more general thermodynamic model. The Fermi model agrees well with the 5.9% concentration data; however, the more elaborate model is needed for higher concentration mixtures. |
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