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Second viscosity and the attenuation of fourth and second sound in superfluid3He near the transition temperature

✍ Scribed by P. Wölfle


Publisher
Springer US
Year
1977
Tongue
English
Weight
336 KB
Volume
26
Category
Article
ISSN
0022-2291

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The velocity of second sound near the la
✍ M.J. Adriaans; D.R. Swanson; J.A. Lipa 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 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 < 10-1°K