Quantum and Quasiclassical Types of Superfluid Turbulence

Authors:

17 June 2008

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 100 (24) , 245301
DOI:10.1103/physrevlett.100.245301
PMID:18643594

Abstract

By injecting negative ions in superfluid

{}^{4}{He}

in the zero-temperature limit (

T \leq 0.5 K

), we have generated tangles of quantized vortex line with negligible large-scale flow. For this quantum regime of superfluid turbulence, the vortex line length

L

was found to decay at late time

t

L \propto t^{- 1}

, the prefactor being independent of the initial value of

L

. The corresponding effective kinematic viscosity is 0.1

κ

, where

κ

is the circulation quantum. At

T > 0.7 K

, a jet of ions generates quasiclassical tangles identical to those produced by mechanical means.

Keywords

All Related Versions

This publication has 23 references indexed in Scilit:

Dissipation of Quantum Turbulence in the Zero Temperature Limit
Physical Review Letters, 2007
Decay of Pure Quantum Turbulence in Superfluid ${}^{3}{He} − B$
Physical Review Letters, 2006
Classical and quantum regimes of superfluid turbulence
JETP Letters, 2003
Evaporation of a Packet of Quantized Vorticity
Physical Review Letters, 2002
Dynamics of vortex tangle without mutual friction in superfluid $^{4} He$
Physical Review B, 2000
The breakdown of superfluidity in liquid 4He III. Nucleation of quantized vortex rings
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1982
Mutual friction in a heat current in liquid heliumn. II. IV. Critical heat currents in wide channels
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1958
Mutual friction in a heat current in liquid helium II III. Theory of the mutual friction
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1957
Mutual friction in a heat current in liquid helium II. II. Experiments on transient effects
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1957
Mutual friction in a heat current in liquid helium II I. Experiments on steady heat currents
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1957