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Regular vortex production by a moving wire in superfluid He-3-B.

Bradley, D. Ian and Pickett, George R. (2000) Regular vortex production by a moving wire in superfluid He-3-B. In: Topological Defects and the non-equilibrium dynamics of symmetry breaking phase transitions. NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES C, MATHEMATICAL AND PHYSICAL SCIENCES, 549 . Springer, Dordrecht, pp. 345-351. ISBN 978-0-7923-6204-3

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Abstract

We report spectacular features on the velocity-force characteristics of a vibrating wire resonator in superfluid He-3-B at ultralow temperatures. We see steps and discontinuities in the characteristics. The steps display two separate critical velocities where firstly some 'event' occurs, causing the wire to lose energy and lose amplitude, followed by a second lower critical velocity where the 'event' decouples. We speculate that these events arise from vortex loop creation at asperities on the vibrating wire.

Item Type: Contribution in Book/Report/Proceedings
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
Faculty of Arts & Social Sciences > Sociology
ID Code: 23572
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 16:43
Refereed?: No
Published?: Published
Last Modified: 26 Jul 2012 21:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23572

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