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Decay of pure quantum turbulence in superfluid He-3-B.

Bradley, D. Ian and Clubb, D. O. and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Matthews, C. J. and Pickett, George R. and Tsepelin, Viktor and Zaki, K. (2006) Decay of pure quantum turbulence in superfluid He-3-B. Physical Review Letters, 96 (3). 035301. ISSN 1079-7114

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Abstract

We describe measurements of the decay of pure superfluid turbulence in superfluid He-3-B, in the low temperature regime where the normal fluid density is negligible. We follow the decay of the turbulence generated by a vibrating grid as detected by vibrating wire resonators. Despite the absence of any classical normal fluid dissipation processes, the decay is consistent with turbulence having the classical Kolmogorov energy spectrum and is remarkably similar to that measured in superfluid He-4 at relatively high temperatures. Further, our results strongly suggest that the decay is governed by the superfluid circulation quantum rather than kinematic viscosity.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Uncontrolled Keywords: GRID TURBULENCE ; FINITE CHANNEL ; GENERATION
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23484
Deposited By: Dr Richard P. Haley
Deposited On: 26 Jan 2009 09:19
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:22
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23484

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