Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste
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 phono...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
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| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128908 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
nasplib_isofts_kiev_ua-123456789-128908 |
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Konstantinov, V.A. Orel, E.S. Revyakin, V.P. 2018-01-14T12:43:11Z 2018-01-14T12:43:11Z 2003 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 https://nasplib.isofts.kiev.ua/handle/123456789/128908 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. The authors are indebted to Prof. V.G. Manzhelii, Full Member of NAS of Ukraine, and Prof. R.O. Pohl (Cornell University) for fruitful discussions. This study was supported by the Ukrainian Ministry of Education and Science, Project F7/286-2001. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Low-Temperature Thermodynamics and Structure Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste |
| spellingShingle |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste Konstantinov, V.A. Orel, E.S. Revyakin, V.P. Low-Temperature Thermodynamics and Structure |
| title_short |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste |
| title_full |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste |
| title_fullStr |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste |
| title_full_unstemmed |
Heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the Kr–Xe syste |
| title_sort |
heat transfer by low-frequency phonons and "diffusive" modes in cryocrystal solutions: the kr–xe syste |
| author |
Konstantinov, V.A. Orel, E.S. Revyakin, V.P. |
| author_facet |
Konstantinov, V.A. Orel, E.S. Revyakin, V.P. |
| topic |
Low-Temperature Thermodynamics and Structure |
| topic_facet |
Low-Temperature Thermodynamics and Structure |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| 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.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128908 |
| citation_txt |
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. |
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| first_indexed |
2025-12-07T16:20:43Z |
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2025-12-07T16:20:43Z |
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1850867128353161216 |