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Leiderer, Paul; Bösch, Wolfgang

doi:10.1103/physrevlett.45.727

Cited by 19 publications

(1 citation statement)

References 13 publications

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“…The study of the Hea-He 4 solution stratification near the tricritical point was performed by Leiderer et al 19 and Hoffer et aL 2~ The metastable solution is prepared by decompression. The formation of critical nuclei is registered with the scattering of the passing laser beam.…”

Section: Introductionmentioning

confidence: 99%

A possible observation of quantum nucleation in superfluid He4 near crystallization

Tsymbalenko

1992

J Low Temp Phys

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The overpressurization of superfluid He 4 under crystallization is studied experimentally. The effect of a substrate and He 3 impurities on the nucleation rate W is observed. The dependence of the metastable state lifetime versus the overpressurization and temperature is measured in the range 10-7-1 s and 0.52-1.75 K. The results are compared with the theoretical predictions for the classic and quantum nucleation. The surface relief effect is considered. It is shown that relative to a flat surface, a cone-shaped pit is a site corresponding to a smaller nucleation energy. In this case a change of the nucleation rate versus the metastability degree and temperature in the classic region is analyzed. As a result, the most reliable qualitative manifestation of quantum nucleation is the independence of the metastable degree under the constant rate W upon temperature, which is observed below 1 K in the experiment.

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Section: Introductionmentioning

confidence: 99%