Resonant nonlinear mode conversion in He II
Journal Article
·
· Phys. Rev. Lett.; (United States)
The results of an experiments to observe the nonlinear conversion of second sound to first sound within a waveguide show that this resonant process occurs at precisely the predicted frequency. Unique procedures are used to calibrate first-sound transducers and we find the amplitude of the mode-converted first sound has its predicted value which is determined principally by partialrho/..lambda.. (..omega../sup 2/) where ..omega.. is the difference between the normal-fluid and superfluid velocities and rho is the density.
- Research Organization:
- Physics Department, University of California, Los Angeles, California 90024
- OSTI ID:
- 6948888
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 41:6; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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