The effective thermal conductivity coefficient was measured in superfluid mixtures <$E nothing sup 3 roman He> in <$E nothing sup 4 roman He> with initial molar concentration 9,8 % <$E nothing sup 3 roman He> in the temperature range 70 - 500 mK. New and earlier experimental data on effective thermal conductivity, shear viscosity, spin diffusion are analyzed within the framework of the phonon-impuriton kinetic theory of superfluid mixtures. It is shown that experimental results for all kinetic coefficients can be adequately described from unified position, if the corresponding impuriton-impuriton relaxation times are used as fitting parameters. In the complex hierarchy, the role of each relaxation processes is estimated as a function of temperature and concentration. It is found that three phonon processes essentially contribute to setting of the equilibrium state. The phonon-impuriton relaxation times are calculated by integrating over the phonon energy in the whole region where such processes are allowed.

• Калько Тимур Віталійович (фізико-математичні науки)
• Рудавський Едуард Якович (1938–) (фізико-математичні науки)

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