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Thermodynamics of freezing and melting of4He in Vycor

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Abstract

Recently it was discovered that helium in confined geometries remains a liquid at pressures considerably above bulk melting. By combining a special technique for measuring pressures in small pores with thermal measurements, the phase diagram has been obtained for freezing and melting of4He in Vycor glass. The measurements cover the range of temperature from 0.8 to 2.5 K and extend to pressures of 6.0 MPa. At 1 K,4He is found to remain a liquid up to 4.2 MPa. The change in volume and latent heat on freezing are found and a complete analysis is given of the thermodynamics of freezing of helium in the Vycor.

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Author notes

  1. K. Uhlig

    Present address: Walther-Meissner Institut, Fur Tieftemperatureforschung, Garching, West Germany

Authors and Affiliations

  1. Department of Physics, University of Florida, Gainesville, Florida

    E. D. Adams, Y. H. Tang, K. Uhlig & G. E. Haas

Authors
  1. E. D. Adams
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  2. Y. H. Tang
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  3. K. Uhlig
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  4. G. E. Haas
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Adams, E.D., Tang, Y.H., Uhlig, K. et al. Thermodynamics of freezing and melting of4He in Vycor. J Low Temp Phys 66, 85–98 (1987). https://doi.org/10.1007/BF00681469

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  • DOI: https://doi.org/10.1007/BF00681469

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