Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste
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| Creator |
Konstantinov, V.A.
Orel, E.S. Revyakin, V.P. |
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| Subject |
Low-Temperature Thermodynamics and Structure
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| Description |
The temperature and volume dependences of the thermal conductivity of the Kr₁–ξ Xeξ solid solution are analyzed in a model in which heat is transferred by low-frequency phonons; above the phonon mobility edge this is done by "diffusive" modes migrating randomly from site to site. The phonon mobility edge w₀ is determined from the condition that the phonon mean free path limited by umklapp processes and scattering on point defects cannot be smaller than one-half the phonon wavelength. The Bridgman coefficientg g = - (∂ln Λ/∂lnV)T is the weighted mean over these modes, whose volume dependences differ strongly. It is shown that the amount of heat transferred by the "diffusive" modes above 100 K is quite large even in pure Kr and it increases with rising temperature and impurity concentration.
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| Date |
2018-01-14T12:43:11Z
2018-01-14T12:43:11Z 2003 |
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| Type |
Article
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| Identifier |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe system / V.A. Konstantinov, E.S. Orel, V.P. Revyakin // Физика низких температур. — 2003. — Т. 29, № 9-10. — С. 1007-1011. — Бібліогр.: 14 назв. — англ.
0132-6414 PACS: 66.70., 63.20.Ls http://dspace.nbuv.gov.ua/handle/123456789/128908 |
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| Language |
en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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