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The velocity of second sound near Tλ

✍ Scribed by R. Williams; S.E.A. Beaver; J.C. Fraser; R.S. Kagiwada; I. Rudnick


Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
155 KB
Volume
29
Category
Article
ISSN
0375-9601

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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