The Decay of Quantum Turbulence Generated by a Vibrating Grid at Low Temperatures in Superfluid 3He-B

Journal Article · Thu Sep 07 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2354657· OSTI ID:20877546

Bradley, D I; Fisher, S N; Guenault, A M; Haley, R P; Matthews, C J; Pickett, G R; Tsepelin, V; Zaki, K ^[1]

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1. Department of Physics, Lancaster University, Lancaster, LA1 4YB (United Kingdom)

We describe measurements of the decay of quantum turbulence produced by a vibrating grid in superfluid 3He-B at low temperatures. Two nearby NbTi vibrating wire resonators at different distances from the grid are used to detect the turbulence via a reduction in the quasiparticle damping owing to Andreev reflection by the flow around the vortex lines. The decay time constant of this turbulence, after stopping the grid motion, is longer at the wire furthest from the grid. This suggests that either the tangle evolves and moves away from the grid once the grid motion has been stopped, or that there is a faster decay mechanism in operation close to the grid.

• OSTI ID: 20877546
• Journal Information: AIP Conference Proceedings, Vol. 850, Issue 1; Conference: LT24: 24. international conference on low temperature physics, Orlando, FL (United States), 10-17 Aug 2005; Other Information: DOI: 10.1063/1.2354657; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
DAMPING
DISTANCE
HELIUM 3
INTERMETALLIC COMPOUNDS
NIOBIUM
OPERATION
REFLECTION
RESONATORS
SUPERFLUIDITY
TITANIUM
TURBULENCE
VORTICES
WIRES