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Forced oscillation of the A-B phase boundary in superfluid He-3.

Bartkowiak, M. and Fisher, Shaun N. and Guénault, A.M. and Haley, Richard P. and Plenderleith, G. N. and Pickett, George R. and Skyba, P. (2000) Forced oscillation of the A-B phase boundary in superfluid He-3. Physica B: Condensed Matter, 284-28 (1). pp. 240-241. ISSN 0921-4526

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We present measurements conducted on the oscillating interface between superfluid He-3 A and B. The measurements, made at 150 mu K, are taken at frequencies between 100 mHz, where the boundary moves almost in thermal equilibrium with the fluid, and several kHz, where the boundary motion is highly non-linear and out of equilibrium. Driving the oscillations to higher amplitudes seems to produce different friction mechanisms dominant only after certain thresholds. As yet these phenomenon have defied any explanation, theoretical or otherwise.

Item Type: Journal Article
Journal or Publication Title: Physica B: Condensed Matter
Uncontrolled Keywords: A-B boundary ; He-3 superfluid ; ultralow temperatures
Subjects: ?? qc ??
Departments: Faculty of Science and Technology > Physics
ID Code: 23499
Deposited By: Dr Richard P. Haley
Deposited On: 28 Jan 2009 16:41
Refereed?: Yes
Published?: Published
Last Modified: 10 Apr 2018 11:39
Identification Number:

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