Analysis of experiments on the study of electrical activity inhelium

From the experimental point of view, the works on the study of the so-called electricalactivity in superfluid helium are analyzed. Based on the analysis of published data on theresults of experiments on the appearance of such electrical activity under the propagationof second sound waves, during osc...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2022-02, Vol.48 (2)
Main Authors: Maidanov, V A, Syvokon, V E, Sokolov, S S
Format: Article
Language:English
Subjects:
Acoustic propagation
Acoustic waves
Fluids
Helium
Liquid helium
Sound propagation
Sound waves
Superfluidity
Wave propagation
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Summary:From the experimental point of view, the works on the study of the so-called electricalactivity in superfluid helium are analyzed. Based on the analysis of published data on theresults of experiments on the appearance of such electrical activity under the propagationof second sound waves, during oscillations of a torsion oscillator filled with helium andmicrowave electromagnetic pumping of helium, one concludes that the experimental resultspublished before 2016 do not give sufficient reasons to assume the presence of any specialelectrical activity of helium, and the appearance of an electric signal in a cell withsuperfluid helium at the propagation of acoustic waves in it can only be said after 2016.The nature of this signal needs further investigation.
ISSN:1063-777X
1090-6517