Nucleation and growth of the new phase in the supersaturated [sup 3]He-[sup 4]He superfluid solutions

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · Journal of Low Temperature Physics; (United States)

DOI:https://doi.org/10.1007/BF00754742· OSTI ID:6480804

Adamenko, I N; Chervanyov, A I; Nemchenko, K E; Tsyganok, V I ^[1]; Chagovets, V K; Mikheev, V A; Rudavskii, E Ya; Sheshin, G A ^[2]

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1. Kharkov State Univ. (Ukraine)
2. Institute for Low Temperature Physics and Engineering, Kharkov (Ukraine)

Phase separation kinetics and growth of the new phase in supersaturated superfluid [sup 3]He-[sup 4]He solutions was studied using the method of continuous change of [sup 3]He concentration in situ and developed theory. Simultaneous measurements of the first sound velocity and the dielectric constant were carried out during the change of concentration. The velocity and attenuation of the first sound and the dielectric constant in supersaturated metastable solutions were calculated on the assumption that the excess [sup 3]He in the solution is in the form of both atoms and droplets of the new phase. It was shown that the sound velocity, unlike the dielectric constant, is very sensitive to the formation of droplets. Comparison of the theory and the experimental data allowed the authors to elucidate the growth dynamics of the nuclei of the new phase from the metastable supersaturated mixture.

• OSTI ID: 6480804
• Journal Information: Journal of Low Temperature Physics; (United States), Vol. 96:5-6; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINARY MIXTURES
PHASE TRANSFORMATIONS
HELIUM 3
HELIUM 4
NUCLEATION
SUPERFLUIDITY
DISPERSIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MIXTURES
NUCLEI
STABLE ISOTOPES
665420* - Superfluidity- (1992-)