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Measurements of the transverse sound phase velocity in superfluid3He-B

✍ Scribed by S. Kalbfeld; D.M. Kucera; J.B. Ketterson


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
140 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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The velocity of second sound near the la
✍ M.J. Adriaans; D.R. Swanson; J.A. Lipa πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 163 KB

We report new high precision data on the velocity of second sound close to the lambda transition of 4He at the saturated vapor pressure. The second sound wave is detected by a powdered salt pill of copper ammonium bromide in direct contact with the liquid helium. With a thermometer noise of < 10-1Β°K