| Issue |
J. Phys. Colloques
Volume 39, Number C6, Août 1978
The XVth International Conference on low temperature physicsQuantum Fluids and Solids Superconductivity |
|
|---|---|---|
| Page(s) | C6-13 - C6-14 | |
| DOI | https://doi.org/10.1051/jphyscol:1978606 | |
The XVth International Conference on low temperature physics
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-13-C6-14
DOI: 10.1051/jphyscol:1978606
Schuster Laboratory, University of Manchester, Manchester M13 9PL, England.
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-13-C6-14
DOI: 10.1051/jphyscol:1978606
DIRECT OBSERVATION OF ORBITAL DISSIPATION AND SUPERFLOW COLLAPSE IN 3He-A
M. Bagley, P.C. Main, J.R. Hook, D.J. Sandiford and H.E. HallSchuster Laboratory, University of Manchester, Manchester M13 9PL, England.
Résumé
Des expériences de pendule de torsion dans lesquelles le temps de relaxation orbitale est comparable à la période d 'oscillation montrent une atténuation fortement dépendante de l'amplitude dans 3He-A qui est absente dans 3He-B A forte amplitude, la densité superfluide apparente tend vers zéro, suggérant l'effondrement du courant superfluide comme l 'ont décrit Bhattacharyya, Ho et Mermin.
Abstract
Torsion pendulum experiments in which the orbital relaxation time is comparable with the oscillation period show strong amplitude dependent damping in 3He-A that is absent in 3He-B. At large amplitudes the apparent superfluid density decreases towards zero, suggesting collapse of superflow as described by Bhattacharyya, Ho and Mermin.