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Decay of quantum turbulence generated by a vibrating grid at low temperatures in superfluid He-3-B.

Bradley, D. Ian 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 quantum turbulence generated by a vibrating grid at low temperatures in superfluid He-3-B. American Institute of Physics Conference Proceedings, 850. pp. 175-176. ISSN 0094-243X

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Abstract

We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid He-3-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.

Item Type: Article
Journal or Publication Title: American Institute of Physics Conference Proceedings
Uncontrolled Keywords: superfluidity ; Helium-3B ; quantum turbulence ; vibrating grid
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23482
Deposited By: Dr Richard P. Haley
Deposited On: 26 Jan 2009 09:15
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:22
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23482

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