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Dynamics of binary phase separation in liquid He-3-He-4 mixturesBinary phase-separation dynamics in liquid mixtures of He-3 and He-4 has been investigated near the tricritical point with laser-light scattering techniques. Rapid decompression of the mixtures results in quenches into the miscibility gap so that both the metastable and unstable (spinodal) regions can be probed. Quenches into the unstable region allowed measurements of the normalized dynamic structure factor S(k,t) that confirm the dynamical scaling hypotheses for spinodal decomposition. Measurements made for concentrations well away from the tricritical value show different behavior and suggest the presence of a spinodal boundary. Forward scattering intensities for shallow quenches probe nucleation phenomena and permit quantitative measurements of anomalous super-cooling as a function of quench rate. Comparisons with data in organic binary mixtures are given.
Document ID
19860046335
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hoffer, J. K.
(Los Alamos National Lab. NM, United States)
Sinha, D. N.
(Los Alamos National Laboratory NM, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1986
Publication Information
Publication: Physical Review A - General Physics, 3rd Series
Volume: 33
ISSN: 0556-2791
Subject Category
Thermodynamics And Statistical Physics
Accession Number
86A31073
Distribution Limits
Public
Copyright
Other

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