Transient heat transfer in superfluid He 4 (He II) is a complex process that involves the
interplay of the unique counterflow heat-transfer mode, the emission of second-sound …

Evolution of the shape of the second and the first sound waves, excited in superfluid He-II by
a pulsed heater, with increasing a power Q of the heat pulse has been studied. It has been …

Three dimensionality of three-dimensional (3D) pulsed second-sound waves in He II emitted
from a finite size heater is experimentally investigated and theoretically studied based on the …

Recent work on nonlinear second sound wave propagation and acoustic turbulence in
superfluid 4 He is reviewed. Observations of direct and inverse turbulent energy cascades …

Phenomena following a rapid mechanical quench of liquid He 4 from its normal to its
superfluid phase are reported and discussed. The mechanical expansion apparatus is an …

We report preliminary results of investigations of the nonlinear second sound wave
interaction in a high-quality resonator filled with superfluid 4 He. The anomalously large …

The anomalously strong amplitude dependence of the second sound wave velocity allows
experimentally studying the behavior of nonlinear waves in a linearly dispersive medium …

An experimental study of the propagation of long (up to 1000 μs) heat pulses showed that for
heat transfer, the formation of a vortex field near the heating medium on characteristic …

An experimental investigation of nonlinear waves is reported for a system of one-
dimensional second sound waves in superfluid helium within a cylindrical resonator of high …

Гелий, сверхтекучий гелий, при давлениях ниже 25 атм остаётся жидким при
температурах вплоть до абсолютного нуля, когда количество возбуждений в среде и …