Shape oscillations in levitated He II drops

We describe experiments to study the shape oscillations of levitated He II drops. Drops of approximately 0.5 cm diameter are levitated magnetically with a superconducting solenoid, and shape oscillations are induced with an ac electric field. We have measured the damping of shape oscillations as a f...

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Bibliographic Details
Published in:Journal of low temperature physics 1998-11, Vol.113 (3-4), p.491-499
Main Authors: Whitaker, D L, Kim, C, Vicente, C L, Weilert, M A, Maris, H J, Seidel, G M
Format: Article
Language:English
Subjects:
Condensation
Drop formation
Electric field effects
Evaporation
Low temperature effects
Magnetic levitation
Oscillations
Solenoids
Superconducting devices
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Summary:We describe experiments to study the shape oscillations of levitated He II drops. Drops of approximately 0.5 cm diameter are levitated magnetically with a superconducting solenoid, and shape oscillations are induced with an ac electric field. We have measured the damping of shape oscillations as a function of temperature. The damping rate is compared to that predicted by a two fluid, hydrodynamic model, which takes account the effect of the motion in the vapor. The effects of condensation and evaporation on the motion of the drop are also considered.
ISSN:0022-2291
DOI:10.1023/A:1022512530878