The results of experimental studies of wave turbulence in a system of capillary waves formed on the surface of liquid hydrogen at a temperature of 15 K in a cylindrical cell with monochromatic radially symmetric pumping are presented. The local maximum formation with a decrease in the pumping amplitude was observed for the first time in the high-frequency region of the inertial range of the stationary turbulent spectrum at the direct cascade edge. The occurrence of a local maximum can be associated with a significant manifestation of viscous damping in the high-frequency region of the spectrum.

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