Sound propagation in helium-II in grafoil

Eva Andrei, W. I. Glaberson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Fourth-sound-like propagation in superfluid He4 in a grafoil-filled resonator has been observed. The sound velocity was found to be more than an order of magnitude smaller than that of ordinary fourth sound. This significant reduction can be explained by picturing the pore structure in grafoil as an ensemble of coupled Helmholtz resonators.

Original languageEnglish (US)
Pages (from-to)4447-4449
Number of pages3
JournalPhysical Review B
Volume20
Issue number11
DOIs
StatePublished - Jan 1 1979

Fingerprint

Helmholtz resonators
Helium
sound propagation
acoustic velocity
Resonators
resonators
helium
Acoustic waves
porosity
acoustics
Acoustic wave velocity
Pore structure

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Andrei, Eva ; Glaberson, W. I. / Sound propagation in helium-II in grafoil. In: Physical Review B. 1979 ; Vol. 20, No. 11. pp. 4447-4449.
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Sound propagation in helium-II in grafoil. / Andrei, Eva; Glaberson, W. I.

In: Physical Review B, Vol. 20, No. 11, 01.01.1979, p. 4447-4449.

Research output: Contribution to journalArticle

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