On the formation mechanism of impurity-helium solids: evidence for extensive clustering
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
On the formation mechanism of impurity-helium solids: evidence for extensive clustering
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| Creator |
Popov, E.A.
Eloranta, J. Ahokas, J. Kunttu, H. |
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| Subject |
3-й Международный семинар по физике низких температур в условиях микрогравитации
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| Description |
Optical emission studies on a discharged nitrogen-helium gas jet injected into superfluid helium near 1.5 K are described. The analysis of atomic (a-group) and molecular Vegard-Kaplan transitions clearly indicates that the emitting species are embedded in the nitrogen clusters. The formation of the clusters is most efficient in the crater formed on the liquid surface. The model calculations based on the classical bubble model and density functional theory suggest that under the experimental conditions only clusters consisting of more than 1000 molecules have a kinetic energy sufficient for the stable cavity formation inside liquid helium. The results obtained suggest that the formation of impurity-helium solids is a consequence of extensive clustering in the gas jet.
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| Date |
2018-01-14T10:53:31Z
2018-01-14T10:53:31Z 2003 |
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| Type |
Article
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| Identifier |
On the formation mechanism of impurity-helium solids: evidence for extensive clustering / E.A. Popov, J. Eloranta, J. Ahokas, H. Kunttu // Физика низких температур. — 2003. — Т. 29, № 6. — С. 684-689. — Бібліогр.: 24 назв. — англ.
0132-6414 PACS: 67.80.-s, 61.46.+w http://dspace.nbuv.gov.ua/handle/123456789/128860 |
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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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