The peculiarities of heat transfer in CO₂ and N₂O solids at low temperatures
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
The peculiarities of heat transfer in CO₂ and N₂O solids at low temperatures
|
|
| Creator |
Sumarokov, V.V.
Stachowiak, P. Jeżowski, A. |
|
| Subject |
Classical Cryocrystals
|
|
| Description |
The thermal conductivities of CO₂ and N₂O solids have been investigated in the low-temperature range 1–40 K. The thermal conductivities of CO₂ and N₂O are large compared with those of simple molecular crystals such as N₂, CO, or O₂ in the whole investigated temperature range. Analysis of the experimental data by the Callaway method shows that relatively large size of crystalline grains, low density of dislocations and weak phonon–phonon interaction might be the reasons for the good thermal conduction in these crystals at temperatures near the maxima. A comparison between calculated values of the intensity of normal phonon scattering processes and experiment gives evidence that in N₂O there is an additional (in comparison with CO₂) giant scattering of phonons. This scattering is described in the frameworks of soft potential model by the resonance phonon scattering on tunnel states and low-energy vibratons. |
|
| Date |
2017-06-16T08:07:15Z
2017-06-16T08:07:15Z 2007 |
|
| Type |
Article
|
|
| Identifier |
The peculiarities of heat transfer in CO₂ and N₂O solids at low temperatures / V.V. Sumarokov, P. Stachowiak, A. Jeżowski // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 778-782. — Бібліогр.: 23 назв. — англ.
0132-6414 PACS: 63.20.–e; 66.70.+f; 44.10.+i http://dspace.nbuv.gov.ua/handle/123456789/121794 |
|
| Language |
en
|
|
| Relation |
Физика низких температур
|
|
| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
|
|