Onset of turbulence in superfluid 3He-B and its dependence on vortex injection in applied flow

Details Onset of turbulence in superfluid 3He-B and its dependence on vortex injection in applied flow Onset of turbulence in superfluid 3He-B and its dependence on vortex injection in applied flow

2005-11-25

arxiv.org/abs/cond-mat/0511611v1

Physics

Condensed Matter

Soft Condensed Matter

To be published in the proceedings of the 24th International Conference on Low Temperature Physics - LT24, in Conference Proce

Scientific paper

10.1063/1.2354658

Vortex dynamics in 3He-B is divided by the temperature dependent damping into a high-temperature regime, where the number of vortices is conserved, and a low-temperature regime, where rapid vortex multiplication takes place in a turbulent burst. We investigate experimentally the hydrodynamic transition between these two regimes by injecting seed vortex loops into vortex-free rotating flow. The onset temperature of turbulence is dominated by the roughly exponential temperature dependence of vortex friction, but its exact value is found to depend on the injection method.

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