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Viscosity of the3He-4He dilute phase in the mixing chamber of a dilution refrigerator

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Abstract

The viscosity of the dilute phase of a3He-4He solution has been measured using a vibrating wire viscometer situated in the mixing chamber of a dilution refrigerator. The viscosity was extracted from the damping of the resonator for temperatures between 3.7 mK and 100 mK. In the low-temperature Fermi liquid regime ηT2=48×10−9 N sec m−2 K2. For temperatures less than 100 mK, the viscometer is a useful secondary thermometer that is not strongly dependent on the applied magnetic field.

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Authors and Affiliations

  1. Department of Physics, University of Lancaster, Lancaster, United Kingdom

    D. I. Bradley & R. Oswald

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  1. D. I. Bradley
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  2. R. Oswald
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Bradley, D.I., Oswald, R. Viscosity of the3He-4He dilute phase in the mixing chamber of a dilution refrigerator. J Low Temp Phys 80, 89–97 (1990). https://doi.org/10.1007/BF00683116

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  • DOI: https://doi.org/10.1007/BF00683116

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