학술논문
Surface Waves on the Superfluids $$^3$$ He and $$^4$$ He.
Document Type
Article
Author
Source
Subject
*SURFACE waves (Fluids)
*SUPERFLUIDITY
*INVISCID flow
*FREE surfaces
*FLUID dynamics
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Language
ISSN
0022-2291
Abstract
Free surface waves were examined both in superfluids $$^3$$ He and $$^4$$ He with the premise that these inviscid media would represent ideal realizations for this fluid dynamics problem. The work in $$^3$$ He is one of the first of its kind, but in $$^4$$ He, it was possible to produce a much more complete set of data for meaningful comparison with theoretical models. Most measurements were performed at the zero temperature limit, meaning $$T<$$ 100 mK for $$^4$$ He and $$T\sim $$ 100 $$\upmu $$ K for $$^3$$ He. Dozens of surface wave resonances, including up to 11 overtones, were observed and monitored as the liquid depth in the cell was varied. Despite of the wealth of data, perfect agreement with the constructed theoretical models could not be achieved. [ABSTRACT FROM AUTHOR]