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On the approach to criticality of a vibrating, macroscopic object in superfluid 3HeB

Lambert, Colin (1990) On the approach to criticality of a vibrating, macroscopic object in superfluid 3HeB. Physica B: Condensed Matter, 165-16 (1). pp. 653-654. ISSN 0921-4526

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Abstract

An intuitive picture of pair breaking by a vibrating wire is developed, which makes dear how quasi-particles can escape from the wire at critical velocities the Landau critical velocity νL. Assuming strong gap suppression at the wire surface, a critical velocity of is obtained, for ideal dipole flow around a wire of circular cross-section. In addition, a further transition to enhanced quasi-particle emission is predicted to occur at a velocity More generally, for non-dipole flow, and where at αl characterizes the local superflow near the surface of the wire.

Item Type: Article
Journal or Publication Title: Physica B: Condensed Matter
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 58121
Deposited By: ep_importer_pure
Deposited On: 24 Oct 2012 10:19
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2014 00:08
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/58121

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