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 inJournal of low temperature physics Vol. 113; no. 3-4; pp. 491 - 499
Main Authors Whitaker, D L, Kim, C, Vicente, C L, Weilert, M A, Maris, H J, Seidel, G M
Format Journal Article
LanguageEnglish
Published 01.11.1998
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.
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ISSN:0022-2291
DOI:10.1023/A:1022512530878