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| VOLUME 91 | ISSUE 6 |
PAGE 291
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| Observation of wave energy accumulation in the turbulent spectrum of capillary waves on the He-II surface under harmonic pumping |
L. V. Abdurakhimov, M. Yu. Brazhnikov, I. A. Remizov, A. A. Levchenko
Institute of Solid State Physics RAS, 142432 Chernogolovka, Russia
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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.
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