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Nucleation and phase separation in superfluid solutions of 3He–4He upon a change in concentration

В. А. Михеев, É. Ya. Rudavskiı̆, V. К. Chagovets, G. A. Sheshin

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Abstract

Simultaneous measurements of the first sound velocity and dielectric constant at 90 mK are used to study the probability of phase separation of superfluid 3He−4He solutions and the dependence of supersaturation on the rate of increase in the solution concentration. It is found that the latter has the form of a weak power dependence. The obtained results allow us to compare and analyze all the available experimental data on the supersaturation of 3He−4He solutions.

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What this paper is about

Simultaneous measurements of the first sound velocity and dielectric constant at 90 mK are used to study the probability of phase separation of superfluid 3He−4He solutions and the dependence of supersaturation on the rate of increase in the solution concentration. It is found that the latter has the form of a weak power dependence. The obtained results allow us to compare and analyze all the available experimental data on the supersaturation of 3He−4He solutions.

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Available abstract

Simultaneous measurements of the first sound velocity and dielectric constant at 90 mK are used to study the probability of phase separation of superfluid 3He−4He solutions and the dependence of supersaturation on the rate of increase in the solution concentration. It is found that the latter has the form of a weak power dependence. The obtained results allow us to compare and analyze all the available experimental data on the supersaturation of 3He−4He solutions.

Key concepts: Nucleation, Superfluidity, Phase change, Helium-3, Helium-4, Isotopes of helium, Phase (matter), Materials science

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