Low Temperature Physics: 45, 469 (2019); https://doi.org/10.1063/1.5097354
Fizika Nizkikh Temperatur: Volume 45, Number 5 (May 2019), p. 547-554    ( to contents , go back )

Self-organization of neutral particles on the superfluid helium surface

A.A. Levchenko1,2, E.V. Lebedeva1, L.P. Mezhov-Deglin1,2, and A.A. Pelmenev2,3

1Institute of Solid State Physics RAS, 2 Academician Ossipyan Str., Chernogolovka 142432, Russia
E-mail: lebedeva@issp.ac.ru

22L.D. Landau Institute of Theoretical Physics RAS, Chernogolovka 142432, Russia

3Branch of Talroze Institute for Energy Problems of Chemical Physics RAS, Chernogolovka 142432, Russia
pos Анотація:

Received November 12, 2018, published online March 26, 2019

Abstract

Hollow glass microspheres were inserted into the bulk of he-lium for visualization of the turbulent flows, which appeared on the surface of superfluid helium due to noncollinear surface waves interaction. Diameter of microspheres was ~ 60 μm their density was less and close to the density of liquid helium. These microspheres united into aggregates (tracers) with the dimensions 0.2–0.3 mm approximately, covered by the liquid helium layer. We discuss surface tension as a possible means of self-organization of light tracers and macroscopic 2D structures for-mation, observed in experiments.

Key words: superfluid He II, surface tension, self-organization of test particles on the surface.

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