RESONANCES IN SYSTEMS WITH TWO DIFFERENT TYPES OF HEAT TRANSFER

Heat transfer in double-layer systems with superfluid helium as one of the layers is studied in this paper. Double-layer systems like heater-helium and helium-detector were considered. The limiting cases of the relation of the non-helium layer length and the length of the heat wave in it were investigated. The unusual resonances were found in the double-layer system helium-detector. Analytical expressions for width and amplitudes of these resonances were obtained. At the same time it was found that the resonance width in helium can be determined not by the dissipative properties of helium, but by the thermodynamic parameters of the detector.