Abstract
We report the results of an experimental investigation of the nature of the vortex-boundary interaction and its role in the spin-up problem of superfluid He4. We find evidence for two independence vortex-drag mechanismsa drag associated with vortex lines pulling against pinning sites with a force equal to the line tension and a viscous drag associated with vortex motion through the normal-fluid Ekman layers.
Original language | English |
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Pages (from-to) | 171-177 |
Number of pages | 7 |
Journal | Physical Review B |
Volume | 32 |
Issue number | 1 |
DOIs | |
State | Published - 1985 |
Externally published | Yes |