Heat capacity of methane-krypton solid solutions. Conversion effect
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Heat capacity of methane-krypton solid solutions. Conversion effect
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| Creator |
Minchina, I.Ya.
Manzhelii, V.G. Bagatskii, M.I. Sklyar, O.V. Mashchenko, D.A. Pokhodenko, M.A. |
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| Subject |
Физические свойства криокристаллов
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| Description |
The heat capacity of Kr-nCH4 solid solutions with the concentrations n= 1; 5; 10% and of the solid solution Kr-1%CH4-0.2%O2 has been studied at 0.7-8 K. The contributions of Crot to the heat capacity of the solutions caused by the rotation of the CH4 molecules are estimated. The deviations of the measured Crot from the values corresponding to the equilibrium distribution of the nuclear spin CH4 modifications are dependent on the correlation between the characteristic times of conversion and of the calorimetric experiment. The effects of temperature, O2 impurities, and CH4 clusters upon the conversion rate are studied. It is shown that the hybrid mechanism of conversion proposed by Berlinsky and Nijman, which takes into account both intramolecular and intermolecular interactions of the proton spins, is predominant. The heat capacity of Kr–nCH4 solid solutions with the concentrations n=1; 5; 10% and of the solid solution Kr–1% CH4–0.2% O2 is studied at 0.7–8 K. The contributions Crot to the heat capacity of the solutions due to the rotation of the CH4 molecules are estimated. The deviations of the measured Crot from the values corresponding to the equilibrium distribution of the CH4 nuclear spin modifications are dependent on the correlation between the characteristic times of conversion and of the calorimetric experiment. The effects of temperature, O2 impurities, and CH4 clusters upon the conversion rate are studied. It is shown that the hybrid mechanism of conversion proposed by Berlinsky and Nijman, which takes into account both intramolecular and intermolecular interactions of the proton spins, is predominant. |
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| Date |
2018-01-13T16:48:10Z
2018-01-13T16:48:10Z 2001 |
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| Type |
Article
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| Identifier |
Heat capacity of methane-krypton solid solutions. Conversion effect / I.Ya. Minchina, V.G. Manzhelii, M.I. Bagatskii, O.V. Sklyar, D.A. Mashchenko, M.A. Pokhodenko // Физика низких температур. — 2001. — Т. 27, № 7. — С. 773-779. — Бібліогр.: 20 назв. — англ.
0132-6414 PACS: 65.40.+g http://dspace.nbuv.gov.ua/handle/123456789/128696 |
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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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