Experiments on the twisted vortex state in superfluid 3He-B

Abstract

We have performed measurements and numerical simulations on a bundle of vortex lines which is expanding along a rotating column of initially vortex-free 3He-B. Expanding vortices form a propagating front: Within the front the superfluid is involved in rotation and behind the front the twisted vortex state forms, which eventually relaxes to the equilibrium vortex state. We have measured the magnitude of the twist and its relaxation rate as function of temperature above 0.3Tc. We also demonstrate that the integrity of the propagating vortex front results from axial superfluid flow, induced by the twist.

prepared for proceedings of the QFS2007 symposium in Kazan

References in corpus (7)

• Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates
• Shear flow and Kelvin-Helmholtz instability in superfluids
• Dynamics of vortices and interfaces in superfluid 3He
• Twisted vortex state
• Measurement of Turbulence in Superfluid 3He-B
• Dynamic Remanent Vortices in Superfluid 3He-B
• Onset of turbulence in superfluid 3He-B and its dependence on vortex injection in applied flow

Cited by in corpus (5)

• Turbulent dynamics in rotating helium superfluids
• Precessing vortex motion and instability in a rotating column of superfluid 3He-B
• The dynamics of vortex generation in superfluid 3He-B
• Thermal Detection of Turbulent and Laminar Dissipation in Vortex Front Motion
• Asymptotic motion of a single vortex in a rotating cylinder