Bradley, D. Ian and Clubb, D. O. and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Matthews, C. J. and Pickett, George R. and Tsepelin, Viktor and Zaki, K. (2005) Emission of discrete vortex rings by a vibrating grid in superfluid He-3-B : a precursor to quantum turbulence. Physical Review Letters, 95 (3). 035302. ISSN 1079-7114Full text not available from this repository.
We report a transition in the vorticity generated by a grid moving in the B phase of superfluid He-3 at T < T-c. The evolution of the vorticity after arresting the grid shows a dramatic change in the decay rate at a critical grid velocity. We believe this to reflect a sharp transition from ballistic vortex-ring production at low grid velocities to quantum turbulence at higher velocities and that independent isolated vortex rings provide the precursors to the developed turbulence. Furthermore we believe that this may be a feature of all quantum turbulence arising from repetitive mechanical agitation.
|Journal or Publication Title:||Physical Review Letters|
|Uncontrolled Keywords:||VORTEX RINGS ; GRID ; SUPERFLUID ; TURBULENCE|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Dr Richard P. Haley|
|Deposited On:||26 Jan 2009 09:34|
|Last Modified:||07 Jan 2015 13:46|
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