title: Dissipation of quantum turbulence in the zero temperature limit.
abstract: Turbulence, produced by an impulsive spin down from angular velocity Omega to rest of a cube-shaped container, is investigated in superfluid 4He at temperatures 0.08 K-1.6 K. The density of quantized vortex lines L is measured by scattering negative ions. Homogeneous turbulence develops after time t approximately 20/Omega and decays as L proportional, t-3/2. The corresponding energy flux =nu'(kappaL)2 proportional, t-3 is characteristic of quasiclassical turbulence at high Re with a saturated energy-containing length. The effective kinematic viscosity in T=0 limit is nu'=0.003kappa, where kappa=10(-3) cm2 s(-1) is the circulation quantum.
authors.affiliation: School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom.
authors.forename: P M
authors.initials: PM
authors.lastname: Walmsley
authors.forename: A I
authors.initials: AI
authors.lastname: Golov
authors.forename: H E
authors.initials: HE
authors.lastname: Hall
authors.forename: A A
authors.initials: AA
authors.lastname: Levchenko
authors.forename: W F
authors.initials: WF
authors.lastname: Vinen