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Thermal concentration gradients and the thermal diffusion ratio in3He-4He mixtures near the tricritical point

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Abstract

We report a study of transient effects in sound velocity measurements in several3He-4He mixtures near the tricritical point, from which by extrapolation we derive the equilibrium thermal concentration gradient and the thermal diffusion ratiok T . In the superfluid phase, the thermal concentration gradient is found to be proportional to the concentration susceptibility.

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Authors and Affiliations

  1. Department of Physics, Duke University, Durham, North Carolina

    D. Roe & H. Meyer

Authors
  1. D. Roe
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  2. H. Meyer
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Research supported by a grant from the National Science Foundation.

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Roe, D., Meyer, H. Thermal concentration gradients and the thermal diffusion ratio in3He-4He mixtures near the tricritical point. J Low Temp Phys 28, 349–358 (1977). https://doi.org/10.1007/BF00668222

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  • DOI: https://doi.org/10.1007/BF00668222

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