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Viscosity, ion mobility, and the λ transition

Goodstein, David L. (1977) Viscosity, ion mobility, and the λ transition. Physical Review B, 15 (11). pp. 5210-5216. ISSN 0163-1829. doi:10.1103/PhysRevB.15.5210.

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A model is presented of the λ transition in superfluid helium in which fluctuations near the transition are approximated by distinct regions of normal fluid and superfluid. The macroscopic viscosity of such a medium is computed. The ion mobility is also computed, taking into account a region of normal fluid around the ion induced by electrostriction. The results are, for the viscosity, ηλ-η∼t^0.67 and for the mobility μ-μλ∼t^0.92 both in excellent agreement with recent experiments. The model suggests that the λ transition itself is the point at which superfluid regions become macroscopically connected.

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Additional Information:©1977 The American Physical Society. Received 1 November 1976. Special thanks are owed to Professor R.W. Zwanzig. This work could not have been done without his contributions. We are also indebted to Professor M. Cole and Professor P.G. Saffman for their generous help. Work supported in part by NSF grant No. DMR71-01819 and by the Italian agencies CNR and CNEN under the U.S.-Italy Cooperative Scientific Program.
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Consiglio Nazionale delle Ricerche (CNR)UNSPECIFIED
Comitato Nazionale per l'Energia Nucleare (CNEN)UNSPECIFIED
Issue or Number:11
Record Number:CaltechAUTHORS:GOOprb77
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:8604
Deposited By: Tony Diaz
Deposited On:22 Aug 2007
Last Modified:08 Nov 2021 20:51

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