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The generation of quantum turbulence in He-3-B by a vibrating grid at low temperatures.

Bradley, D. Ian 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. (2006) The generation of quantum turbulence in He-3-B by a vibrating grid at low temperatures. American Institute of Physics Conference Proceedings, 850. pp. 173-174. ISSN 0094-243X

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Abstract

We have measured the onset of quantum turbulence generated by a vibrating grid resonator in He-3-B. Our measurements were carried out in the low temperature regime where the normal fluid component is very dilute and can be described as a gas of ballistic quasiparticles. Consequently, the normal fluid component can not participate in turbulence generation. We have measured the onset of turbulence from the grid motion using two nearby vibrating wire resonators. The vibrating wires show a reduction in thermal quasiparticle damping due to Andreev reflection in the surrounding turbulent velocity field. Our measurements reveal a transition in the transient behavior of the onset of the vorticity signal at the vibrating wire resonators as a function of the grid velocity.

Item Type: Article
Journal or Publication Title: American Institute of Physics Conference Proceedings
Uncontrolled Keywords: superfluid ; Helium-3 ; quantum turbulence ; ultralow temperature
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23478
Deposited By: Dr Richard P. Haley
Deposited On: 26 Jan 2009 09:00
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:22
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23478

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