Second-Sound Velocity, Gravitational Effects, Relaxation Times, and Superfluid Density Near the Tricritical Point in 3He-4He Mixtures

  • Guenter Ahlers
  • Dennis S. Greywall


There has been considerable interest recently in the behavior of liquid 3He-4He mixtures near the tricritical point. We wish to report results for the second-sound velocity1 in this system which yielded information about the superfluid density, the coherence length, the phase diagram, the effect of gravity, and concentration relaxation times


Gravitational Effect Tricritical Point Coexistence Curve Superfluid Density Phase Separation Temperature 
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Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • Guenter Ahlers
    • 1
  • Dennis S. Greywall
    • 1
  1. 1.Bell LaboratoriesMurray HillUSA

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