Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects
The kinetics of helium gas sorption by a C₆₀ powder and subsequent desorption of the ⁴He impurity from the saturated powder has been investigated in the temperature interval 2–292 K. Evidence is obtained that supports the existence of two stages in the temperature dependences of sorption and desorpt...
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| Дата: | 2010 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2010
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| Назва видання: | Физика низких температур |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/117541 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects / A.V. Dolbin, V.B. Esel'son, V.G. Gavrilko, V.G. Manzhelii, N.A.Vinnikov, S.N. Popov // Физика низких температур. — 2010. — Т. 36, № 12. — С. 1352–1355. — Бібліогр.: 16 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1175412017-05-25T03:03:28Z Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects Dolbin, A.V. Esel'son, V.B. Gavrilko, V.G. Manzhelii, V.G. Vinnikov, N.A. Popov, S.N. Наноструктуры при низких температурах The kinetics of helium gas sorption by a C₆₀ powder and subsequent desorption of the ⁴He impurity from the saturated powder has been investigated in the temperature interval 2–292 K. Evidence is obtained that supports the existence of two stages in the temperature dependences of sorption and desorption. The stages account for the different times taken by helium to occupy the octahedral and tetrahedral interstices in the C₆₀ lattice. The characteristic times of sorption and desorption coincide. It is found that the temperature dependences of the characteristic times of occupying the octahedral and tetrahedral interstices are nonmonotonic. As the temperature is lowered from 292 to 79.3 K, the characteristic times increase, which indicates a predominance of thermally activated diffusion of helium in C₆₀. On a further decrease to T = 10 K the characteristic times reduce over an order of magnitude. Below 8 K the characteristic times of sorption and desorption are temperature-independent. This suggests a tunnel character of ⁴He diffusion in C₆₀. 2010 Article Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects / A.V. Dolbin, V.B. Esel'son, V.G. Gavrilko, V.G. Manzhelii, N.A.Vinnikov, S.N. Popov // Физика низких температур. — 2010. — Т. 36, № 12. — С. 1352–1355. — Бібліогр.: 16 назв. — англ. 0132-6414 PACS: 68.43.Mn http://dspace.nbuv.gov.ua/handle/123456789/117541 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Наноструктуры при низких температурах Наноструктуры при низких температурах |
| spellingShingle |
Наноструктуры при низких температурах Наноструктуры при низких температурах Dolbin, A.V. Esel'son, V.B. Gavrilko, V.G. Manzhelii, V.G. Vinnikov, N.A. Popov, S.N. Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects Физика низких температур |
| description |
The kinetics of helium gas sorption by a C₆₀ powder and subsequent desorption of the ⁴He impurity from the saturated powder has been investigated in the temperature interval 2–292 K. Evidence is obtained that supports the existence of two stages in the temperature dependences of sorption and desorption. The stages account for the different times taken by helium to occupy the octahedral and tetrahedral interstices in the C₆₀ lattice. The characteristic times of sorption and desorption coincide. It is found that the temperature dependences of the characteristic times of occupying the octahedral and tetrahedral interstices are nonmonotonic. As the temperature is lowered from 292 to 79.3 K, the characteristic times increase, which indicates a predominance of thermally activated diffusion of helium in C₆₀. On a further decrease to T = 10 K the characteristic times reduce over an order of magnitude. Below 8 K the characteristic times of sorption and desorption are temperature-independent. This suggests a tunnel character of ⁴He diffusion in C₆₀. |
| format |
Article |
| author |
Dolbin, A.V. Esel'son, V.B. Gavrilko, V.G. Manzhelii, V.G. Vinnikov, N.A. Popov, S.N. |
| author_facet |
Dolbin, A.V. Esel'son, V.B. Gavrilko, V.G. Manzhelii, V.G. Vinnikov, N.A. Popov, S.N. |
| author_sort |
Dolbin, A.V. |
| title |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects |
| title_short |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects |
| title_full |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects |
| title_fullStr |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects |
| title_full_unstemmed |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects |
| title_sort |
kinetics of ⁴he gas sorption by fullerite c₆₀. quantum effects |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| publishDate |
2010 |
| topic_facet |
Наноструктуры при низких температурах |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117541 |
| citation_txt |
Kinetics of ⁴He gas sorption by fullerite C₆₀. Quantum effects / A.V. Dolbin, V.B. Esel'son, V.G. Gavrilko, V.G. Manzhelii, N.A.Vinnikov, S.N. Popov // Физика низких температур. — 2010. — Т. 36, № 12. — С. 1352–1355. — Бібліогр.: 16 назв. — англ. |
| series |
Физика низких температур |
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