Phase separation in 3He–4He solutions. Fast nucleation line
В. А. МихеевPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovÉ. Ya. Rudavskiı̆Physicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovV. К. ChagovetsPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovF. A. SheshinPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
ABI
Аннотация
The kinetics of phase separation in 3He-4He superfluid solutions is studied in the temperature interval 50-200 mk by continuously varying the solution concentration in the course of the experiment. The separation is recorded from the anomaly in the first sound velocity and the dielectric constant. The existence of a long-lived metastable superfluid phase is detected and its range established between the equilibrium separation line and the rapid nucleation line. The obtained experimental results are not in quantitative agreement with the theoretical ones.
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