Investigation of critical velocity of vortex formation in helium II

It is shown that the critical velocity of vortex formation V/sub c/ in helium II, as measured in oscillation experiments, is strongly distorted by the delay effect, the elimination of which removes the dependence of Vc on the period, and the increase of V/sub c/ on approaching the lambda point is ch...

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Veröffentlicht in:J. Low Temp. Phys.; (United States) 1980-09, Vol.40 (5-6), p.511-518
Hauptverfasser: Nadirashvili, Z. Sh, Tsakadze, J. S.
Format: Artikel
Sprache:eng
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Zusammenfassung:It is shown that the critical velocity of vortex formation V/sub c/ in helium II, as measured in oscillation experiments, is strongly distorted by the delay effect, the elimination of which removes the dependence of Vc on the period, and the increase of V/sub c/ on approaching the lambda point is changed to a decrease.
ISSN:0022-2291
1573-7357
DOI:10.1007/BF00119521