Sound propagation in helium-II in grafoil

E. Y. Andrei; W. I. Glaberson

doi:10.1103/PhysRevB.20.4447

Sound propagation in helium-II in grafoil

E. Y. Andrei^*, W. I. Glaberson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

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 language	English
Pages (from-to)	4447-4449
Number of pages	3
Journal	Physical Review B
Volume	20
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.20.4447
State	Published - 1979
Externally published	Yes

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title = "Sound propagation in helium-II in grafoil",

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.",

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year = "1979",

doi = "10.1103/PhysRevB.20.4447",

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AB - 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.

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Sound propagation in helium-II in grafoil

Abstract

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