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arXiv · 0711.3426

Stages of Homogeneous Nucleation in Solid Isotopic Helium Mixtures

M. Poole·J. Saunders·B. Cowan
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Abstract

We have made pressure and NMR measurements during the evolution of phase separation in solid helium isotopic mixtures. Our observations indicate clearly all three stages of the homogeneous nucleation - growth process: 1) creation of nucleation sites; 2) growth of the new-phase component at these nucleation sites; and 3) coarsening: the dissolution of sub-critical droplets with the consequent further late-stage growth of the super-critical droplets. The time exponent for the coarsening, a = 1/3, is consistent with the conserved order parameter Lifshitz-Slezov evaporation-condensation mechanism.

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M. Poole, J. Saunders, B. Cowan. 2007-11-21. Stages of Homogeneous Nucleation in Solid Isotopic Helium Mixtures. https://doi.org/10.1103/physrevlett.100.075301

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