Model for the Core of a Quantized Vortex Line in Helium II
- 23 December 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 21 (26), 1740-1744
- https://doi.org/10.1103/physrevlett.21.1740
Abstract
We propose that a quantized vortex line in helium II has a central core of normal fluid extending over a distance of a few angstroms. Surrounding this core is a "tail," a region of excess density of rotons whose momenta are predominantly aligned oppositely to the direction of circulation of the superfluid. This model is used to calculate the drag on a negative ion trapped on a vortex line, and appears to account for experimental results satisfactorily.Keywords
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