Acoustic Studies in Liquid Helium
Two acoustic studies in liquid helium recently carried out in the present group are reported. The first of these is the study of critical sound attenuation and dispersion associated with the critical phenomena near the super fluid transition temperature, where the validities of the dynamic scaling h...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 1981-01, Vol.20 (S3), p.247 |
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| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Two acoustic studies in liquid helium recently carried out in the present group are reported. The first of these is the study of critical sound attenuation and dispersion associated with the critical phenomena near the super fluid transition temperature, where the validities of the dynamic scaling hypothesis and the universality precept are claimed. The second one is the study of dynamic properties of normal liquid
3
He, a typical Fermi liquid, by the use of sound attenuation. A Landau parameter
F
2
and the lifetime of
3
He quasiparticles have been obtained as functions of pressure. |
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| ISSN: | 0021-4922 1347-4065 |
| DOI: | 10.7567/JJAPS.20S3.247 |