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Decay of pure quantum turbulence in superfluid He-3-B.

Research output: Contribution to journalJournal article

Published

Journal publication date23/01/2006
JournalPhysical Review Letters
Journal number3
Volume96
Number of pages0
Pages035301
Original languageEnglish

Abstract

We describe measurements of the decay of pure superfluid turbulence in superfluid He-3-B, in the low temperature regime where the normal fluid density is negligible. We follow the decay of the turbulence generated by a vibrating grid as detected by vibrating wire resonators. Despite the absence of any classical normal fluid dissipation processes, the decay is consistent with turbulence having the classical Kolmogorov energy spectrum and is remarkably similar to that measured in superfluid He-4 at relatively high temperatures. Further, our results strongly suggest that the decay is governed by the superfluid circulation quantum rather than kinematic viscosity.