The Onset of Vortex Production by a Vibrating Wire in Superfluid He-3-B

Bradley, D. I. and Fisher, S. N. and Ganshin, A. and Guénault, A.M. and Haley, R. P. and Jackson, M. J. and Pickett, G. R. and Tsepelin, V. (2013) The Onset of Vortex Production by a Vibrating Wire in Superfluid He-3-B. Journal of Low Temperature Physics, 171 (5-6). pp. 582-588. ISSN 0022-2291

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We present measurements of the force-velocity response of a vibrating wire resonator in superfluid He-3-B at very low temperatures. At low velocities the response is dominated by intrinsic (vacuum) damping whilst at high velocities it is dominated by pair-breaking. At intermediate velocities there is a series of small plateaus where the velocity often shows small oscillations. We believe that the behaviour results from the stretching of vortices pinned to the wire. The vortices grow and self-reconnect, emitting a vortex ring. The behaviour is very sensitive to the presence of surrounding vortices generated by a neighbouring vibrating wire.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Low Temperature Physics
Uncontrolled Keywords:
?? vorticesmodelturbulencetransitionvibrating wire resonatorlow-temperaturesheliumcritical velocityvelocitylimitheatsuperfluid he-3general materials scienceatomic and molecular physics, and opticscondensed matter physicsmaterials science(all) ??
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Deposited On:
04 Jun 2013 12:51
Last Modified:
16 Jul 2024 09:22