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VOLUME 91 (2010) | ISSUE 6 | PAGE 291
Observation of wave energy accumulation in the turbulent spectrum of capillary waves on the He-II surface under harmonic pumping
Abstract
Recent results of the experimental study of capillary turbulence on superfluid helium-4 surface are presented. For the first time wave energy accumulation was observed in the wave turbulent spectrum at high frequencies when the surface was excited by harmonic pumping. We suggest a qualitative explanation of this phenomenon in the frames of weak wave turbulence approach that takes into account discreteness of the eigenfrequencies spectrum of surface oscillations in the cylindrical resonator.