The Decay of Pure Quantum Turbulence in Superfluid 3He-B

Details The Decay of Pure Quantum Turbulence in Superfluid 3He-B The Decay of Pure Quantum Turbulence in Superfluid 3He-B

2007-06-05

arxiv.org/abs/0706.0621v1

Phys. Rev. Lett. 96, 2006, 035301

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures

Scientific paper

We describe measurements of the decay of pure superfluid turbulence in superfluid 3He-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 4He at relatively high temperatures. Further, our results strongly suggest that the decay is governed by the superfluid circulation quantum rather than kinematic viscosity.

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