TY - JOUR

T1 - Decay of pure quantum turbulence in superfluid He-3-B.

AU - Bradley, D. Ian

AU - Clubb, D. O.

AU - Fisher, Shaun N.

AU - Guénault, A.M.

AU - Haley, Richard P.

AU - Matthews, C. J.

AU - Pickett, George R.

AU - Tsepelin, Viktor

AU - Zaki, K.

PY - 2006/1/23

Y1 - 2006/1/23

N2 - 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.

AB - 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.

KW - GRID TURBULENCE

KW - FINITE CHANNEL

KW - GENERATION

U2 - 10.1103/PhysRevLett.96.035301

DO - 10.1103/PhysRevLett.96.035301

M3 - Journal article

VL - 96

SP - 035301

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 3

ER -