On the formation mechanism of impurity-helium solids: evidence for extensive clustering
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...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2003 |
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| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/128860 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | 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. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862734719505924096 |
|---|---|
| author | Popov, E.A. Eloranta, J. Ahokas, J. Kunttu, H. |
| author_facet | Popov, E.A. Eloranta, J. Ahokas, J. Kunttu, H. |
| citation_txt | 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. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| 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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| first_indexed | 2025-12-07T19:45:03Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128860 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T19:45:03Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Popov, E.A. Eloranta, J. Ahokas, J. Kunttu, H. 2018-01-14T10:53:31Z 2018-01-14T10:53:31Z 2003 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 https://nasplib.isofts.kiev.ua/handle/123456789/128860 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. We wish to thank David M. Lee and Vladimir Khmelenko for fruitful discussions on impurity helium solids. This work was supported by the Academy of Finland. 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 On the formation mechanism of impurity-helium solids: evidence for extensive clustering Article published earlier |
| spellingShingle | On the formation mechanism of impurity-helium solids: evidence for extensive clustering Popov, E.A. Eloranta, J. Ahokas, J. Kunttu, H. 3-й Международный семинар по физике низких температур в условиях микрогравитации |
| title | On the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| title_full | On the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| title_fullStr | On the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| title_full_unstemmed | On the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| title_short | On the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| title_sort | on the formation mechanism of impurity-helium solids: evidence for extensive clustering |
| 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 |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128860 |
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