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Turbulence generated by vibrating wire resonators in superfluid He-4 at low temperatures.

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 Zaki, K. L. (2005) Turbulence generated by vibrating wire resonators in superfluid He-4 at low temperatures. Journal of Low Temperature Physics, 138 (3-4). pp. 493-498. ISSN 0022-2291

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Abstract

We have measured responses of vibrating wire resonators in superfluid He-4 at millikelvin temperatures. We find evidence for turbulence generation above a critical velocity on the order of a few cm/s. At the critical velocity for the onset of turbulence, the resonator velocity abruptly decreases and shows hysteretic behavior. Surprisingly we find that the resonant frequencies of the resonators increase in the turbulent regime. We also find that the critical velocity may be reduced by the presence of turbulence generated by a neighboring vibrating wire resonator, allowing the detection of existing turbulence in the low temperature regime.

Item Type: Article
Journal or Publication Title: Journal of Low Temperature Physics
Uncontrolled Keywords: QUANTUM TURBULENCE ; HE-4
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23488
Deposited By: Dr Richard P. Haley
Deposited On: 26 Jan 2009 09:54
Refereed?: Yes
Published?: Published
Last Modified: 17 Jul 2013 10:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23488

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