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Spatial extent of quantum turbulence in non-rotating superfluid He-3-B.

Research output: Contribution to journalJournal article

Published

Journal publication date05/2003
JournalPhysica B: Condensed Matter
Journal number1
Volume329
Number of pages302
Pages104-405
Original languageEnglish

Abstract

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.