Decay of Pure Quantum Turbulence in Superfluid {sup 3}He-B

Decay of Pure Quantum Turbulence in Superfluid {sup 3}He-B

We describe measurements of the decay of pure superfluid turbulence in superfluid {sup 3}He-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...

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Bibliographic Details
Published in:Physical review letters Vol. 96; no. 3
Main Authors: Bradley, D.I., Clubb, D.O., Fisher, S.N., Guenault, A.M., Haley, R.P., Matthews, C.J., Pickett, G.R., Tsepelin, V., Zaki, K.
Format: Journal Article
Language:English
Published: United States 27-01-2006
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
ENERGY SPECTRA
HELIUM 3
HELIUM 4
RESONATORS
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
TURBULENCE
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Summary:We describe measurements of the decay of pure superfluid turbulence in superfluid {sup 3}He-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 {sup 4}He at relatively high temperatures. Further, our results strongly suggest that the decay is governed by the superfluid circulation quantum rather than kinematic viscosity.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.96.035301