Amplitude of waves in the Kelvin-wave cascade
V. B. Eltsov+, V. S. L'vov*
+Department of Applied Physics, Aalto University, POB 15100, FI-00076 AALTO, Finland
*Department of Chemical Physics, Weizmann Institute of Science, 76100 Rehovot, Israel
Abstract
Development of experimental techniques to study superfluid
dynamics, in particular, application of nanomechanical oscillators to
drive vortex lines, enables potential observation of the Kelvin-wave
cascade on quantized vortices. One of the first questions which then
arises in analysis of the experimental results is the relation between
the energy flux in the cascade and the amplitude of the Kelvin waves. We
provide such relation based on the L'vov-Nazarenko picture of the
cascade. Remarkably, the amplitude of the waves depends on the energy
flux extermely weakly, as power one tenth.