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Quantum turbulence in superfluid He-3 illuminated by a beam of quasiparticle excitations.

Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.M. and Lowe, M. R. and Pickett, George R. and Rahm, A. and Whitehead, R. C. V. (2004) Quantum turbulence in superfluid He-3 illuminated by a beam of quasiparticle excitations. Physical Review Letters, 93 (23). p. 235302. ISSN 1079-7114

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Abstract

We have measured directly the Andreev scattering of a controllable beam of quasiparticle excitations by a localized tangle of quantum vortices in superfluid He-3-B at low temperatures. We present a microscopic description of the Andreev scattering from a vortex line allowing us to estimate the vortex separation scale in a dilute tangle of vortices, providing a better comparison of the observed decay time of the turbulence with recent numerical simulations. The experiments also suggest that below 200 muK we reach the low temperature limit for turbulent dynamics.

Item Type: Article
Journal or Publication Title: Physical Review Letters
Uncontrolled Keywords: ANDREEV REFLECTION ; SUPERFLUID ; HELIUM-3 ; QUANTUM TURBULENCE
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23560
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 15:09
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23560

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