Diffusion in solid helium (A review)

The results of experimental investigations of diffusion processes in solid helium are reviewed. It is shown that 3 He impurities in hcp 4 He are narrow-band quasiparticles whose motion can be adequately described in the existing theory of quantum diffusion. The observed peculiarities of 3 He diffusi...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 1997-01, Vol.23 (1), p.3-14
Main Author: Grigor’ev, V. N.
Format: Article
Language:English
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Summary:The results of experimental investigations of diffusion processes in solid helium are reviewed. It is shown that 3 He impurities in hcp 4 He are narrow-band quasiparticles whose motion can be adequately described in the existing theory of quantum diffusion. The observed peculiarities of 3 He diffusion in the bcc phase of concentrated 3 He – 4 He solutions, i.e., a noticeable diffusive transport at concentrations higher than critical, the independence of the diffusion coefficient D on the concentration for x
ISSN:1063-777X
1090-6517
DOI:10.1063/1.593334