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arXiv · 1003.4709

A new ripplon branch in He II

I. V. Tanatarov·I. N. Adamenko·K. E. Nemchenko·A. F. G. Wyatt
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Abstract

We analyse the dispersion relation of ripplons, on the surface of superfluid helium, using the dispersive hydrodynamics approach and find a new ripplon branch. We obtain analytical equation for the dispersion relation and analytic expressions for the limiting cases. We discuss where ripplons can exist in the energy-wavenumber plane. A numerical solution for the ripplon dispersion curve is obtained in the allowed regions. The new ripplon branch is found at energies just below the instability point.

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I. V. Tanatarov, I. N. Adamenko, K. E. Nemchenko, A. F. G. Wyatt. 2012-06-19. A new ripplon branch in He II. https://doi.org/10.1063/1.3479212

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