Formation of vortex turbulence by a heat current in superfluid helium in a long capillary

Abstract

Abstract 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.