The anomalously strong amplitude dependence of the second sound wave velocity allows an experimental framework to study the behavior of nonlinear waves in a linearly dispersive medium; to investigate the processes of energy transformation from single frequency harmonic pumping into high frequency dissipation edge of spectrum; and to get insight into the formation and decay dynamics of direct and inverse energy cascades.

Keywords: superfluid helium, acoustic turbulence, turbulence, second sound, nonlinear waves PACS: 47.27.Cn, 47.37.+q, 67.25.dg, 67.25.dt (all) DOI: 10.3367/UFNe.2018.03.038317 URL: https://ufn.ru/en/articles/2018/10/a/ 000454141800001 2018PhyU...61..929E Citation: Efimov V B "Acoustic turbulence of second sound waves in superfluid helium" Phys. Usp. 61 929–951 (2018) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Received: 18th, July 2017, revised: 20th, March 2018, accepted: 28th, March 2018 Оригинал: Ефимов В Б «Акустическая турбулентность волн второго звука в сверхтекучем гелии» УФН 188 1025–1048 (2018); DOI: 10.3367/UFNr.2018.03.038317