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Triple vortex ring structure in superfluid helium II

Lookup NU author(s): Dr Demosthenes Kivotides, Professor Carlo Barenghi, Dr David Samuels

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Abstract

Superfluids such as helium II consist of two interpenetrating fluids: the normal fluid and the superfluid. The helium II vortex ring has generally been considered merely as a superfluid object, neglecting any associated motion of the normal fluid. We report a three-dimensional calculation of the coupled motion of the normal-fluid and superfluid components, which shows that the helium II vortex ring consists of a superfluid vortex ring accompanied by two coaxial normal-fluid vortex rings of opposite polarity. The three vortex rings form a coherent, dissipative structure.

Publication metadata

Author(s): Kivotides D, Barenghi CF, Samuels DC

Publication type: Article

Publication status: Published

Journal: Science

Year: 2000

Volume: 290

Issue: 5492

Pages: 777-779

ISSN (print): 0036-8075

ISSN (electronic): 1095-9203

Publisher: American Association for the Advancement of Science

URL: http://dx.doi.org/10.1126/science.290.5492.777

DOI: 10.1126/science.290.5492.777

PubMed id: 11052935

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