Phonon dispersion in liquid He ii
- 1 November 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 12 (9) , 3745-3748
- https://doi.org/10.1103/physrevb.12.3745
Abstract
The eigenfunctions of the linearized collision operator for the phonons in superfluid helium are determined numerically. The calculated sound velocity is in quantitative agreement with experimental data in a wide frequency and temperature range if an anomalous dispersion in cgs units is used.
Keywords
This publication has 18 references indexed in Scilit:
- Frequency and Temperature Dependence of Sound Velocity in Liquid Helium-4: A Test of the Phonon Dispersion RelationPhysical Review Letters, 1975
- Numerical Solution of the Transport Equation for Sound Propagation in He IIPhysical Review A, 1973
- Temperature dependence of the sound velocity in liquid4HeJournal of Low Temperature Physics, 1972
- Phonon-phonon interactions and propagation of sound in liquid4HeJournal of Low Temperature Physics, 1972
- Ultrasonic Attenuation in Liquidunder PressurePhysical Review A, 1972
- Attenuation and Velocity of Sound in Superfluid HeliumPhysical Review Letters, 1972
- Phonon Dispersion and the Propagation of Sound in Liquid Helium-4 below 0.6°KPhysical Review Letters, 1970
- Sound Propagation in LiquidPhysical Review B, 1969
- Single-Collision-Time Theory of Sound Propagation in LiquidHe4below 0.6°KPhysical Review B, 1967
- On the attenuation of sound in liquid heliumPhysica, 1966