ESR studies of nitrogen atoms stabilized in aggregates of krypton–nitrogen nanoclusters immersed in superfluid helium
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
ESR studies of nitrogen atoms stabilized in aggregates of krypton–nitrogen nanoclusters immersed in superfluid helium
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| Creator |
Mao, S.
Boltnev, R.E. Khmelenko, V.V. Lee, D.M. |
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| Subject |
К 75-летию Л.П. Межова-Деглина
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| Description |
Impurity–helium condensates (IHCs) containing nitrogen and krypton atoms immersed in superfluid ⁴He have been studied via a CW electron spin resonance (ESR) technique. The IHCs are gel-like aggregates of nanoclusters composed of impurity species. It was found that the addition of krypton atoms to the nitrogen–helium gas mixture used for preparation of IHCs increases efficiency of stabilization of nitrogen atoms. We have achieved high average (5·10¹⁹ cm⁻³) and local (2·10²¹ cm⁻³) concentrations of nitrogen atoms in kryptonnitrogen–helium condensates. The analysis of ESR lines shows that three different sites exist for stabilization of nitrogen atoms in krypton-nitrogen nanoclusters. Nitrogen atoms are stabilized in the krypton core of nanoclusters, in the nitrogen molecular layer which covers the Kr core and on the surface of the nanoclusters. High concentrations of nitrogen atoms achieved in IHCs provide an important step in the search for magnetic ordering effects at low temperatures. |
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| Date |
2017-05-27T13:27:16Z
2017-05-27T13:27:16Z 2012 |
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| Type |
Article
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| Identifier |
ESR studies of nitrogen atoms stabilized in aggregates
of krypton–nitrogen nanoclusters immersed in superfluid helium / S. Mao, R.E. Boltnev, V.V. Khmelenko, D.M. Lee // Физика низких температур. — 2012. — Т. 38, № 11. — С. 1313–1319. — Бібліогр.: 45 назв. — англ.
0132-6414 PACS: 67.80.–s, 61.46–w, 76.30.Rn, 76.30.–v http://dspace.nbuv.gov.ua/handle/123456789/117923 |
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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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