ESR investigation of hydrogen and deuterium atoms in impurity-helium solids
Impurity-helium solids (Im-He solids) are porous solids created by injecting a beam of mixed helium and impurity gases into superfluid ⁴He. In this work we use electron spin resonance (ESR) techniques to investigate Im-He solids containing atoms and molecules of hydrogen and/or deuterium. We have pe...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2003 |
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128859 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids / S.I. Kiselev, V.V. Khmelenko, E.P. Bernard, D.M. Lee // Физика низких температур. — 2003. — Т. 29, № 6. — С. 678-683. — Бібліогр.: 22 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862619643095547904 |
|---|---|
| author | Kiselev, S.I. Khmelenko, V.V. Bernard, E.P. Lee, D.M. |
| author_facet | Kiselev, S.I. Khmelenko, V.V. Bernard, E.P. Lee, D.M. |
| citation_txt | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids / S.I. Kiselev, V.V. Khmelenko, E.P. Bernard, D.M. Lee // Физика низких температур. — 2003. — Т. 29, № 6. — С. 678-683. — Бібліогр.: 22 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Impurity-helium solids (Im-He solids) are porous solids created by injecting a beam of mixed helium and impurity gases into superfluid ⁴He. In this work we use electron spin resonance (ESR) techniques to investigate Im-He solids containing atoms and molecules of hydrogen and/or deuterium. We have performed studies of low temperature (T ~ 1.35 K) tunnelling chemical reactions in which deuterium atoms replace the hydrogen atoms bound in H₂ or HD molecules to produce large (up to 7.5×10¹⁷cm⁻³) and relatively stable concentrations of free hydrogen atoms. The time dependence of H and D atom concentrations has been investigated for Im-He samples with different initial ratios of hydrogen and deuterium ranging from 1:20 to 1:1.The satellite ESR lines associated with the dipolar coupling of electron spins of H and D atoms to the nuclear moments of the hydrogen nuclei found in neighboring molecules have been observed in Im-He solids. The forbidden hyperfine transition of atomic hydrogen involving the mutual spin flips of electrons and protons has also been observed.
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| first_indexed | 2025-12-07T13:19:31Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128859 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T13:19:31Z |
| publishDate | 2003 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Kiselev, S.I. Khmelenko, V.V. Bernard, E.P. Lee, D.M. 2018-01-14T10:52:48Z 2018-01-14T10:52:48Z 2003 ESR investigation of hydrogen and deuterium atoms in impurity-helium solids / S.I. Kiselev, V.V. Khmelenko, E.P. Bernard, D.M. Lee // Физика низких температур. — 2003. — Т. 29, № 6. — С. 678-683. — Бібліогр.: 22 назв. — англ. 0132-6414 PACS: 67.40.Yv, 67.40.Mj, 61.10.Eq, 61.46.+w https://nasplib.isofts.kiev.ua/handle/123456789/128859 Impurity-helium solids (Im-He solids) are porous solids created by injecting a beam of mixed helium and impurity gases into superfluid ⁴He. In this work we use electron spin resonance (ESR) techniques to investigate Im-He solids containing atoms and molecules of hydrogen and/or deuterium. We have performed studies of low temperature (T ~ 1.35 K) tunnelling chemical reactions in which deuterium atoms replace the hydrogen atoms bound in H₂ or HD molecules to produce large (up to 7.5×10¹⁷cm⁻³) and relatively stable concentrations of free hydrogen atoms. The time dependence of H and D atom concentrations has been investigated for Im-He samples with different initial ratios of hydrogen and deuterium ranging from 1:20 to 1:1.The satellite ESR lines associated with the dipolar coupling of electron spins of H and D atoms to the nuclear moments of the hydrogen nuclei found in neighboring molecules have been observed in Im-He solids. The forbidden hyperfine transition of atomic hydrogen involving the mutual spin flips of electrons and protons has also been observed. The authors are grateful to NASA for supporting this research via grant NAG 8-1445. We also thank P. Borbat, G. Codner, H. Padamsee, V. Shemelin, and R. Silsbee for extremely useful conversations and help with the experiments. 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 ESR investigation of hydrogen and deuterium atoms in impurity-helium solids Article published earlier |
| spellingShingle | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids Kiselev, S.I. Khmelenko, V.V. Bernard, E.P. Lee, D.M. 3-й Международный семинар по физике низких температур в условиях микрогравитации |
| title | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids |
| title_full | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids |
| title_fullStr | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids |
| title_full_unstemmed | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids |
| title_short | ESR investigation of hydrogen and deuterium atoms in impurity-helium solids |
| title_sort | esr investigation of hydrogen and deuterium atoms in impurity-helium solids |
| 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/123456789/128859 |
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