Sound Attenuation in Liquid Helium II at Very Low Temperatures
Journal Article
·
· Progress of Theoretical Physics (Kyoto)
Attenuation at temperatures low enough that rotons can be ignored and the phonon mean free path is much greater than the wavelength of sound, is considered. The attenuation constant resuiting from three phonon processes is calculated. A perturbation calculation is performed in which the phonon dispersion spectrum is neglected. Agreement with observed values is obtained below 0.4 deg K. (L.N.N.)
- Research Organization:
- Kyoto Univ.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-008013
- OSTI ID:
- 4818142
- Journal Information:
- Progress of Theoretical Physics (Kyoto), Journal Name: Progress of Theoretical Physics (Kyoto) Journal Issue: 5 Vol. 26; ISSN 0033-068X
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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