The Flow State of Superfluid He II and the Dynamics of Quantized Vortices

Thermohydrodynamic description of adiabatic flow of He II, in which the high velocity region up to 100cm/s was studied, is given with a new-type mutual friction force. Experiments consist of various thermodynamic measurements and the NMR study of the motion of 3He atoms added to the system. There ap...

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Published inTEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 23; no. 5; pp. 249 - 260
Main Authors SATOH, Takeo, OKUYAMA, Mineo, SATOH, Toshimi
Format Journal Article
LanguageEnglish
Published CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN 1988
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Summary:Thermohydrodynamic description of adiabatic flow of He II, in which the high velocity region up to 100cm/s was studied, is given with a new-type mutual friction force. Experiments consist of various thermodynamic measurements and the NMR study of the motion of 3He atoms added to the system. There appeared various stages of the flow state of superfluid He II. Especially, there exist clearly two characteristic velocities vc1 and vc2. An interpretation of the results is given with the pinning-depinning model of quantized vortices, in which we made a conjecture that quantized vortices construct vortex-bundles in the presence of pinning-centers.
ISSN:0389-2441
1880-0408
DOI:10.2221/jcsj.23.249