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arXiv · 1612.08797

Theory of adiabatic fountain resonance

Gary A. Williams
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Abstract

The theory of "Adiabatic Fountain Resonance" with superfluid $^4$He is clarified. In this geometry a film region between two silicon wafers bonded at their outer edge opens up to a central region with a free surface. We find that the resonance in this system is not a Helmholtz resonance as claimed by Gasparini and co-workers, but in fact is a fourth sound resonance. We postulate that it occurs at relatively low frequency because the thin silicon wafers flex appreciably from the pressure oscillations of the sound wave.

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Gary A. Williams. 2016-12-28. Theory of adiabatic fountain resonance. https://doi.org/10.1007/s10909-016-1735-1

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