Dissipation Mechanisms near the Superfluid 3He Transition in Aerogel
| Autor: | Golov, A.I., Einzel, D., Lawes, G., Matsumoto, Koichi, Parpia, J.M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Zdroj: | Physical review letters. 92(19):195301-195301-4 |
| ISSN: | 0031-9007 |
| Popis: | 金沢大学理学部 The dissipation mechanisms (Q-1) near the superfluid 3He transition in aerogel was investigated using the torsion pendulum technique. It was found that with pure 3He the Q-1 decerases at the onset of superfluidity. It was also found that when phase separated 3He-4He mixtures are introduced into the aerogel, the Q-1 does not decrease as rapidly and eventually increases for the highest 4He content. A model for the related attenuation of transverse sound α that takes into account elastic and inelastic scattering processes was also presented. |
| Databáze: | OpenAIRE |
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