Hydrodynamic Theory of Fourth Sound in a Moving Superfluid — A Discussion of Size Effects
A previous discussion of fourth sound in a moving superfluid is extended to include a detailed estimate of size effects. Comparison with experiment still shows a considerable disagreement. This might indicate the existence of relaxation phenomena on a time scale of 10−2 –102 sec. which have not yet been observed.
KeywordsHelium Atom Detailed Estimate Helium Density Superfluid Density Fourth Sound
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