Low Temperature Physics: 42, 717 (2016); https://doi.org/10.1063/1.4961657
Influence of Kapitza resistance on the stationary nonequilibrium states establishment in superfluid 3He–4He mixtures
T.G. Vihtinskaya, K.E. Nemchenko, and S.Yu. Rogova
V. N. Karazin National University, Kharkiv 61077, Ukraine
Received May 1, 2016
The nonequilibrium steady states establishment when the heat flow is turned on in superfluid mixtures with a sufficiently high concentration 9.8% of 3He is considered. We investigate influence of possible relaxation mechanisms, in particular the Kapitza jump on the process of establishing a constant temperature gradient. From a comparison of theoretical calculations and experimental data thermal diffusivity coefficient, thermal conductivity coefficient, and Kapitsa coefficient are found. It is shown that the Kapitza jump accounting is necessary for a quantitative description of the experimental data.
PACS: 67.60.–g Mixtures of 3He and 4He;
Key words: superfluid mixtures, Kapitza jump, thermal conductivity.
Published online: June 24, 2016