Interaction of infrared light with impurity gels in superfluid helium

Rapid cooling of an impurity-helium mixture into superfluid helium produces a distinctive soft matter—impurity-helium gel, clusters of which coagulate into nanoparticles. The sizes of the particles and their mutual interaction depend on the nature of the impurity atoms and the impurity-helium coupli...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2011-05, Vol.37 (5), p.400-402
Main Authors: Izotov, A. N., Efimov, V. B.
Format: Article
Language:English
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Summary:Rapid cooling of an impurity-helium mixture into superfluid helium produces a distinctive soft matter—impurity-helium gel, clusters of which coagulate into nanoparticles. The sizes of the particles and their mutual interaction depend on the nature of the impurity atoms and the impurity-helium coupling. Here we describe the setup of and preliminary results from an experiment to study infrared absorption by a water-helium gel. Comparisons of the infrared absorption spectra of the gel and of water and ice suggests a peculiar interaction among water molecules in a water-helium gel.
ISSN:1063-777X
1090-6517
DOI:10.1063/1.3602857