Spatial extent of quantum turbulence in non-rotating 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) Spatial extent of quantum turbulence in non-rotating superfluid He-3-B. Physica B: Condensed Matter, 329 (1). pp. 104-405. ISSN 0921-4526

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Quantum turbulence has been shown to reflect a beam of quasiparticles in the B-phase of superfluid He-3 by Andreev processes. We have investigated the evolution of the turbulence generated by a vibrating wire resonator driven at high velocities and temperatures down to -0.1T(c). The vibrating wire produces vorticity together with the expected quasiparticle beam whenever the wire velocity exceeds the critical pair breaking velocity. By using an array of detector wires we are able to investigate the development of the turbulence both in space and time. We observe that the turbulence propagates preferentially along the direction of the quasiparticle beam and drops off in a roughly exponential manner with a decay length of the order of 2 mm.

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Journal Article
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Physica B: Condensed Matter
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03 Feb 2009 16:12
Last Modified:
21 Nov 2022 19:12