Thermal conductivity of solid parahydrogen with methane admixtures
The thermal conductivity of solid parahydrogen crystal with methane admixtures has been measured in the temperature range 1.5 to 8 K. Solid samples were grown from the gas mixture at 13 K. Concentration of CH₄ admixture molecules in the gas varied from 5 to 570 ppm. A very broad maximum of thermal c...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2003 |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Zitieren: | Thermal conductivity of solid parahydrogen with methane admixtures / A.I. Krivchikov, V.V. Sumarokov, J. Mucha, P. Stachowiak, A. Jezowski, O.A. Korolyuk // Физика низких температур. — 2003. — Т. 29, № 6. — С. 706-709. — Бібліогр.: 18 назв. — англ. |
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Krivchikov, A.I. Sumarokov, V.V. Mucha, J. Stachowiak, P. Jezowski, A. Korolyuk, O.A. 2018-01-14T11:04:15Z 2018-01-14T11:04:15Z 2003 Thermal conductivity of solid parahydrogen with methane admixtures / A.I. Krivchikov, V.V. Sumarokov, J. Mucha, P. Stachowiak, A. Jezowski, O.A. Korolyuk // Физика низких температур. — 2003. — Т. 29, № 6. — С. 706-709. — Бібліогр.: 18 назв. — англ. 0132-6414 PACS: 66.70.+f, 67.80.Gb, 67.80.Mg https://nasplib.isofts.kiev.ua/handle/123456789/128871 The thermal conductivity of solid parahydrogen crystal with methane admixtures has been measured in the temperature range 1.5 to 8 K. Solid samples were grown from the gas mixture at 13 K. Concentration of CH₄ admixture molecules in the gas varied from 5 to 570 ppm. A very broad maximum of thermal conductivity with absolute value of about 110 W/(m×K) is observed at 2.6 K. The data are interpreted by Callaway model considering phonons resonant scattering on quasi-local vibrations of CH₄ molecules, phonon-grain boundary and phonon-phonon scattering processes. The increase of grain boundary scattering leads to the decrease of the maximum broadening. The analysis shows that the solid mixture of p-H₂ and CH₄ is a heterogeneous solution for CH₄ concentration higher than 0.1 ppm. We are grateful to Prof. V.G. Manzhelii, Dr. B.Ya. Gorodilov for helpful discussions. The study described in this publication was made possible in part Grant N 2M/78-2000 of Ukrainian Min. of Education and Science. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур 3-й Международный семинар по физике низких температур в условиях микрогравитации Thermal conductivity of solid parahydrogen with methane admixtures Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Thermal conductivity of solid parahydrogen with methane admixtures |
| spellingShingle |
Thermal conductivity of solid parahydrogen with methane admixtures Krivchikov, A.I. Sumarokov, V.V. Mucha, J. Stachowiak, P. Jezowski, A. Korolyuk, O.A. 3-й Международный семинар по физике низких температур в условиях микрогравитации |
| title_short |
Thermal conductivity of solid parahydrogen with methane admixtures |
| title_full |
Thermal conductivity of solid parahydrogen with methane admixtures |
| title_fullStr |
Thermal conductivity of solid parahydrogen with methane admixtures |
| title_full_unstemmed |
Thermal conductivity of solid parahydrogen with methane admixtures |
| title_sort |
thermal conductivity of solid parahydrogen with methane admixtures |
| author |
Krivchikov, A.I. Sumarokov, V.V. Mucha, J. Stachowiak, P. Jezowski, A. Korolyuk, O.A. |
| author_facet |
Krivchikov, A.I. Sumarokov, V.V. Mucha, J. Stachowiak, P. Jezowski, A. Korolyuk, O.A. |
| topic |
3-й Международный семинар по физике низких температур в условиях микрогравитации |
| topic_facet |
3-й Международный семинар по физике низких температур в условиях микрогравитации |
| 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 thermal conductivity of solid parahydrogen crystal with methane admixtures has been measured in the temperature range 1.5 to 8 K. Solid samples were grown from the gas mixture at 13 K. Concentration of CH₄ admixture molecules in the gas varied from 5 to 570 ppm. A very broad maximum of thermal conductivity with absolute value of about 110 W/(m×K) is observed at 2.6 K. The data are interpreted by Callaway model considering phonons resonant scattering on quasi-local vibrations of CH₄ molecules, phonon-grain boundary and phonon-phonon scattering processes. The increase of grain boundary scattering leads to the decrease of the maximum broadening. The analysis shows that the solid mixture of p-H₂ and CH₄ is a heterogeneous solution for CH₄ concentration higher than 0.1 ppm.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128871 |
| citation_txt |
Thermal conductivity of solid parahydrogen with methane admixtures / A.I. Krivchikov, V.V. Sumarokov, J. Mucha, P. Stachowiak, A. Jezowski, O.A. Korolyuk // Физика низких температур. — 2003. — Т. 29, № 6. — С. 706-709. — Бібліогр.: 18 назв. — англ. |
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| first_indexed |
2025-12-07T19:55:09Z |
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2025-12-07T19:55:09Z |
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