Low Temperature Physics: 26, 762 (2000); https://doi.org/10.1063/1.1312405 (5 pages)
Физика Низких Температур: Том 26, Выпуск 9-10 (Сентябрь 2000), c. 1023-1028    ( к оглавлению , назад )

Thermal conductivity of solid krypton with methane admixture

V. V. Dudkin, B. Ya. Gorodilov, A. I. Krivchikov, and V. G. Manzhelii

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., 61164 Kharkov, Ukraine
E-mail: dudkin@ilt.kharkov.ua

Received February 14, 2000

Аннотация

The thermal conductivity of CH4-Kr solid solutions is investigated at CH4 concentrations 0.2√5.0% in the temperature range 1.8√40 K. It is found that the temperature dependence of the thermal conductivity has features typical of resonance phonon scattering. The analysis of the experimental results shows that the main contribution to the impurity-caused scattering of phonons is made by the scattering on rotational excitations of the nuclear spin T-species of CH4 molecules. The phonon-rotation interaction parameter is estimated.

PACS:
66.70.+f - Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves (for thermal conduction in metals and alloys, see 72.15.Cz and 72.15.Eb)