Stabilization of H and D atoms in Aggregates of Kr Nanoclusters Immersed in Superfluid Helium
| Autor: | V. V. Khmelenko, David M. Lee, Roman E. Boltnev, I. N. Krushinskaya, E. P. Bernard, J. Järvinen |
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| Rok vydání: | 2009 |
| Předmět: |
Condensed Matter::Quantum Gases
Materials science Atoms in molecules Krypton Matrix isolation chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Nanoclusters law.invention chemistry law Molecular film Physics::Atomic and Molecular Clusters Molecule General Materials Science Physics::Atomic Physics Atomic physics Electron paramagnetic resonance Superfluid helium-4 |
| Zdroj: | Journal of Low Temperature Physics. 158:468-477 |
| ISSN: | 1573-7357 0022-2291 |
| Popis: | Impurity–helium condensates containing krypton atoms and also atoms and molecules of hydrogen isotopes have been studied via an electron spin resonance (ESR) technique. Analysis of the ESR spectra shows that most of the H and D atoms reside in molecular layers (H2 or D2) formed on the surfaces of Kr nanoclusters. The thickness of the molecular films was found to determine the rates of recombination of the atoms into molecules, with atoms in the thinner films recombining much more slowly. Very large average concentrations were obtained for H atoms (1019 cm−3) and D atoms (3⋅1019 cm−3) in these experiments. |
| Databáze: | OpenAIRE |
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