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Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids
A theoretical model is developed to describe the experimental results obtained for the isobaric thermal conductivity of rare gas solids (RGS). The isobaric thermal conductivity of RGS has been analysed within Debye approximation with regard to the effect of thermal expansion. The suggested model tak...
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Інститут фізики конденсованих систем НАН України
2007
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| Series: | Condensed Matter Physics |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/118380 |
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irk-123456789-1183802017-05-31T03:07:22Z Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids Pursky, O.I. Konstantinov, V.A. A theoretical model is developed to describe the experimental results obtained for the isobaric thermal conductivity of rare gas solids (RGS). The isobaric thermal conductivity of RGS has been analysed within Debye approximation with regard to the effect of thermal expansion. The suggested model takes into consideration the fact that thermal conductivity is determined by U-processes while above the phonon mobility edge it is determined by “diffusive” modes migrating randomly from site to site. The mobility edge ω₀ is determined from the condition that the phonon mean-free path restricted by the U-processes cannot be smaller than half of the phonon wavelength. Теоретична модель адаптована для опису експериментальних результатiв, отриманих для iзобарної теплопровiдностi кристалiв iнертних газiв. Iзобарна теплопровiднiсть кристалiв iнертних газiв аналiзується в рамках наближення Дебая iз врахуванням впливу теплового розширення. Запропонована модель, в якiй тепло переноситься фононами, а вище вiд межi рухливостi фононiв – “дифузними” модами, що мiгрують випадковим чином з вузла на вузол. Межа рухливостi фононiв ω₀ визначається iз умови, що довжина вiльного пробiгу фонона, котра визначається U-процесами, не може стати меншою за половину довжини хвилi. 2007 Article Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids / O.I. Pursky, V.A. Konstantinov // Condensed Matter Physics. — 2007. — Т. 10, № 2(50). — С. 229-234. — Бібліогр.: 16 назв. — англ. 1607-324X PACS: 66.70.+f, 63.20.Ls DOI:10.5488/CMP.10.2.229 http://dspace.nbuv.gov.ua/handle/123456789/118380 en Condensed Matter Physics Інститут фізики конденсованих систем НАН України |
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English |
| description |
A theoretical model is developed to describe the experimental results obtained for the isobaric thermal conductivity of rare gas solids (RGS). The isobaric thermal conductivity of RGS has been analysed within Debye approximation with regard to the effect of thermal expansion. The suggested model takes into consideration the fact that thermal conductivity is determined by U-processes while above the phonon mobility edge it is
determined by “diffusive” modes migrating randomly from site to site. The mobility edge ω₀ is determined from the condition that the phonon mean-free path restricted by the U-processes cannot be smaller than half of the phonon wavelength. |
| format |
Article |
| author |
Pursky, O.I. Konstantinov, V.A. |
| spellingShingle |
Pursky, O.I. Konstantinov, V.A. Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids Condensed Matter Physics |
| author_facet |
Pursky, O.I. Konstantinov, V.A. |
| author_sort |
Pursky, O.I. |
| title |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| title_short |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| title_full |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| title_fullStr |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| title_full_unstemmed |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| title_sort |
contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids |
| publisher |
Інститут фізики конденсованих систем НАН України |
| publishDate |
2007 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/118380 |
| citation_txt |
Contribution of thermal expansion and "diffusive" modes to isobaric thermal conductivity of rare gas solids / O.I. Pursky, V.A. Konstantinov // Condensed Matter Physics. — 2007. — Т. 10, № 2(50). — С. 229-234. — Бібліогр.: 16 назв. — англ. |
| series |
Condensed Matter Physics |
| work_keys_str_mv |
AT purskyoi contributionofthermalexpansionanddiffusivemodestoisobaricthermalconductivityofraregassolids AT konstantinovva contributionofthermalexpansionanddiffusivemodestoisobaricthermalconductivityofraregassolids |
| first_indexed |
2023-10-18T20:32:00Z |
| last_indexed |
2023-10-18T20:32:00Z |
| _version_ |
1796150448800923648 |