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Reviews of topical problems


Quantum turbulence in superfluid helium

 
Osipyan Institute of Solid State Physics, Russian Academy of Sciences, Akademika Osip'yana str. 2, Chernogolovka, Moscow Region, 142432, Russian Federation

Helium at pressures below 25 atm remains liquid at temperatures down to absolute zero, when the number of excitations in the medium and the concentration of the normal component become negligible. This makes it possible to use superfluid helium at low temperatures as a model medium to study the formation and decay of a turbulent system. Describing and modeling the behavior of vortices in superfluid helium at temperatures below 0.1 K, when the amount of the normal component becomes negligible, are greatly simplified due to the quantization of the flow of the superfluid component, and all hydrodynamic properties of helium associated with its rotational motion are determined by quantized vortices. The article reviews experimental methods for the excitation and detection of quantum turbulence presented in experimental studies in recent years, and discusses features of vortex generation by various methods and at different temperatures of the superfluid, the dynamics of change in the concentration of vortices during the generation and decay of the vortex system, and the difference between the behavior of quantized vortices under Kolmogorov turbulence and that under Vinen turbulence.

Fulltext pdf (1.7 MB)
Fulltext is also available at DOI: 10.3367/UFNe.2021.11.039096
Keywords: superfluidity, quantized vortices, turbulence, helium-4
PACS: 07.20.Mc, 47.27.Cn, 47.32.C−, 67.25.dg, 67.25.dk (all)
DOI: 10.3367/UFNe.2021.11.039096
URL: https://ufn.ru/en/articles/2023/1/d/
001112589600003
2-s2.0-85182871626
2023PhyU...66...59E
Citation: Efimov V B "Quantum turbulence in superfluid helium" Phys. Usp. 66 59–89 (2023)
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Received: 2nd, July 2021, revised: 17th, October 2021, 4th, November 2021

Оригинал: Ефимов В Б «Квантовая турбулентность в сверхтекучем гелии» УФН 193 63–95 (2023); DOI: 10.3367/UFNr.2021.11.039096

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