The Transition to Turbulent Drag for a Cylinder Oscillating in Superfluid He-4 : A Comparison of Quantum and Classical Behavior.

Bradley, D. Ian and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Tsepelin, Viktor and Pickett, George R. and Zaki, K. L. (2009) The Transition to Turbulent Drag for a Cylinder Oscillating in Superfluid He-4 : A Comparison of Quantum and Classical Behavior. Journal of Low Temperature Physics, 154 (3-4). pp. 97-116. ISSN 0022-2291

Full text not available from this repository.

Abstract

We have measured the drag and inertial forces on wire resonators in superfluid He-4 at millikelvin temperatures. At low velocities the behavior is dominated by the intrinsic properties of the resonators which can be measured in vacuum. On increasing velocity we see a sharp transition corresponding to the sudden appearance of drag and inertial forces arising from quantum vortex lines in the superfluid. We present detailed measurements of the superfluid drag and inertial forces as a function of the resonator velocity. We discuss results for two different wire diameters and for different resonant frequencies. We compare and contrast the observed behavior with that measured for cylinders in oscillating classical fluids.

Item Type: Journal Article
Journal or Publication Title: Journal of Low Temperature Physics
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 23644
Deposited By: Dr Richard P. Haley
Deposited On: 17 Feb 2009 10:22
Refereed?: Yes
Published?: Published
Last Modified: 22 Jun 2019 02:25
URI: https://eprints.lancs.ac.uk/id/eprint/23644

Actions (login required)

View Item View Item