Abstract
The effective thermal conductivity of superfluid mixtures of He3 in He4 with an initial concentration of 9.8% He3 is investigated in the temperature interval 70–500 mK. The results, together with previously available experimental data on the thermal conductivity, viscosity, and mass and spin diffusion, are analyzed in the framework of the kinetic theory of the phonon–impuriton system of superfluid mixtures. It is shown that the experimental results for all the kinetic coefficients can be described from a unified viewpoint if the corresponding impuriton–impuriton scattering times are used as adjustable parameters. The role of each relaxation process in the complex hierarchy of relaxation times is determined as a function of temperature and concentration. It is found that even in concentrated mixtures a substantial contribution to the establishment of equilibrium is made by three-phonon processes. The phonon–impuriton relaxation times are calculated by integrating over the phonon energy in the entire region where such processes are allowed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
