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
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
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.