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Direct observation of the Andreev reflection of a quasiparticle beam by quantum turbulence in superfluid He-3-B.

Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.M. and Lowe, M. R. and Pickett, George R. and Rahm, A. (2003) Direct observation of the Andreev reflection of a quasiparticle beam by quantum turbulence in superfluid He-3-B. Physica B: Condensed Matter, 329 (1). pp. 64-65. ISSN 0921-4526

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Abstract

A beam of quasiparticles from a black-body radiator is directed at a localized region of quantum turbulence generated by a vibrating wire resonator driven at super-critical velocity. We are able to measure directly the fraction of the incident quasiparticle beam which is retro-reflected from the turbulence by Andreev processes. Combining these measurements with previous measurements on the spatial extent of the turbulence may allow us to infer the vortex line density.

Item Type: Article
Journal or Publication Title: Physica B: Condensed Matter
Additional Information: Describes the first direct imaging of a quantum turbulent tangle by the Andreev reflection of a beam of quasiparticle excitations, a novel technique leading to further discoveries in quantum fluids research (see above). Bradley devised and supervised all aspects of this experiment. RAE_import_type : Journal article RAE_uoa_type : Physics
Uncontrolled Keywords: vorticity ; superfluid He3 ; vortex line density ; quantum turbulence
Subjects: ?? qc ??
Departments: Faculty of Science and Technology > Physics
ID Code: 2257
Deposited By: ep_importer
Deposited On: 04 Apr 2008 11:24
Refereed?: Yes
Published?: Published
Last Modified: 19 Sep 2017 01:25
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/2257

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