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періодичних видань НАН України
Heat transfer in crystalline clathrate hydrates at low temperatures
Репозиторій DSpace/Manakin
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Heat transfer in crystalline clathrate hydrates at low temperatures
Тема:
Related Topics
Інший ID:
PACS: 66.70.+f; 63.20.–e; 63.20.Pw; 63.50.+x
Посилання:
Heat transfer in crystalline clathrate hydrates at low
temperatures / A.I. Krivchikov, O.A. Korolyuk, O.O. Romantsova // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 798-804. — Бібліогр.: 31 назв. — англ.
Підтримка:
The study was partially supported with a Grant of
President of Ukraine for young scientists engaged in scientific
research (GP/F13/0037). We thank Prof. Vadim Manzhelii, Prof. Werner Press,
and Prof. Javier Bermejo for fruitful discuss.
Дата:
2007
Переглядів:
827
Завантажень:
475
Анотація:
The experimental results on the thermal conductivity k(T) of crystalline Xe, CH₄, and THF clathrate hydrates
have been analyzed. In a wide region of temperatures above 2 K, k(T) exhibits a behavior typical of
disordered solids, which depends weakly on their chemical composition, crystalline structure and microstructure.
The results are discussed in the context of phenomenological models of phonon scattering by local
modes. It has been found that the Xe clathrate has a feature unusual for glasses, namely, k(T) decreases almost
two-fold as the temperature increases from 50–100 K. The behavior of k(T) is presumably determined
mainly by the strong phonon scattering on water molecules.
