Sound propagation in liquid He4

B. M. Abraham*, Y. Eckstein, J. B. Ketterson, M. Kuchnir, J. Vignos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

Measurements of the attenuation of sound in liquid He4 down to 0.1 K have been performed at 12, 30, 36, 60, 84, 90, 108, 132, 150, and 208 MHz. Measurements of the temperature dependence of the velocity of sound were made at 12, 36, 60, and 84 MHz. These data are compared with recent theoretical work, particularly that of Khalatnikov and Chernikova. The attenuation data agree well with theory in the vicinity of the peak in the attenuation near 1 K but do not agree elsewhere, the observed attenuation being greater than that predicted by theory. The temperature dependence of the velocity at low temperatures is found to be less than that predicted by theory, while the frequency dependence of the velocity (at finite temperature) is opposite to that predicted by theory.

Original languageEnglish (US)
Pages (from-to)347-373
Number of pages27
JournalPhysical Review
Volume181
Issue number1
DOIs
StatePublished - 1969

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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