Korolyuk O. Quantum effects in the thermal conductivity of solid solutions of hydrogen and deuterium.

Objects: thermal conductivity of solid solutions p-H2- o-D2. Goals: experimental studying of singularities of heat transfer in quantum systems, on the example of solid p-H2 and solid solutions p-H2- o-D2. Methods: the measuring of thermal conductivity by a conventional steady-state heat flow method at low temperature. New results: The effect of increasing of phonon scattering by heavy point defects has been investigated and concentration dependence of this effect has been studied; it has been found that the heavy impurity essentially changes plastic properties of quantum crystal; the intensity of the normal phonon-phonon scattering processes in crystalline D2 has been estimated; it is shown that for all studied substances (including quantum crystals) the intensity of the normal phonon-phonon processes at low temperatures can be described by a universal curve using the characteristic parameters of the crystals; appreciable anisotropy of the thermal conductivity of solid H2 has been found.