Gravity induced vortices and stepwise growth of these vortices in vertical counterflow of liquid helium |
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| Authors: | JM Desrumaux MLe Ray |
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| Institution: | Laboratoire d''Hydrodynamique s?uperflùide, 59326 - Centre Universitaire de Valenciennes, France |
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| Abstract: | Detailed measurements of the second sound excess attenuation in vertical counterflow show the existence of a zero critical velocity and of steps which can be interpreted as a Josephson A.C. effect related to vortex motion. |
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