Critical Velocity of a Superflowing Liquid-Helium Film Using Third Sound
- 5 February 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 178 (1) , 389-399
- https://doi.org/10.1103/PhysRev.178.389
Abstract
An investigation of the critical velocity of the helium film is made by impressing a third-sound wave (surface ripple with van der Waals restoring force) on a superflowing film. The velocities of the wave are measured traveling upstream and downstream, and the superfluid critical velocity is deduced as .
Keywords
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