Open AccessFormation of vortex turbulence by a heat current in superfluid helium in a long capillary
Author(s) -
A. A. Оrlova,
В. М. Ефимов
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1309/1/012007
Subject(s) - superfluid helium 4 , superfluidity , helium , quantum vortex , vortex , turbulence , second sound , condensed matter physics , current (fluid) , thermal conductivity , physics , lambda point refrigerator , mechanics , liquid helium , vortex ring , materials science , atomic physics , thermodynamics , sound (geography) , acoustics
The propagation of long pulses of the second sound in superfluid helium was experimentally studied. The results of the experiments showed that at the propagation of heat currents of sufficiently high power the process of formation a vortex tangle begins near the heater. It leads to significantly reducing the counterflow of the normal and the superfluid components in helium and, consequently, thermal conductivity of superfluid helium.