Vortex motion in rotating superfluid He-3-B
Abstract
Using nuclear magnetic resonance (NMR) techniques, two modes in the temporal response of B-phase vortices were observed: (1) a large readjustment of vortex density occurs in about 10 sec; and (2) small changes near equilibrium are associated with exponentially damped relaxation of about 1-4 min. The latter represents an overdamped collective mode of the vortex array, governed by elasticity and pinning. As in superconductors, at large vortex density, pinning becomes a collective effect, reflecting the rigidity of the ordered vortex lattice.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- May 1991
- Bibcode:
- 1991STIN...9221763S
- Keywords:
-
- Elastic Properties;
- Helium Isotopes;
- Nuclear Magnetic Resonance;
- Pinning;
- Rotating Fluids;
- Superfluidity;
- Vortices;
- Hydrodynamics;
- Superconductors;
- Fluid Mechanics and Heat Transfer