Electron attachment to atomic hydrogen on the surface of liquid ⁴He
We demonstrate a possibility that helium surface electrons at cryogenic temperatures can be used as a
 new source of very low energy electrons. Since both electrons (e¯) and hydrogen atoms (H) are bound on liquid
 helium surface, two-dimensional mixture gas of these two species is...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2008 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/116927 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Electron attachment to atomic hydrogen on the surface
 of liquid ⁴He / T. Arai, H. Yayama, K. Kono // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 496–503. — Бібліогр.: 28 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862700625175773184 |
|---|---|
| author | Arai, T. Yayama, H. Kono, K. |
| author_facet | Arai, T. Yayama, H. Kono, K. |
| citation_txt | Electron attachment to atomic hydrogen on the surface
 of liquid ⁴He / T. Arai, H. Yayama, K. Kono // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 496–503. — Бібліогр.: 28 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We demonstrate a possibility that helium surface electrons at cryogenic temperatures can be used as a
new source of very low energy electrons. Since both electrons (e¯) and hydrogen atoms (H) are bound on liquid
helium surface, two-dimensional mixture gas of these two species is available on the surface. We found
that low energy collision of e¯ and H drives electron attachment to form a negative hydrogen ion (H¯) in the
mixture. From our temperature dependence measurement of the reaction rate, it was found that another H
atom participate in the reaction. Namely, the reaction is expressed as H + H + e¯ → H¯ + H. Possible reaction
mechanisms are discussed in terms of direct three-body process and dissociative attachment process. Measurements
in applied magnetic field (B) show that the reaction rate coefficient is suppressed as ~ B⁻². This
implies that electron spin singlet collision is relevant for electron attachment.
|
| first_indexed | 2025-12-07T16:39:12Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-116927 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T16:39:12Z |
| publishDate | 2008 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Arai, T. Yayama, H. Kono, K. 2017-05-18T11:14:15Z 2017-05-18T11:14:15Z 2008 Electron attachment to atomic hydrogen on the surface
 of liquid ⁴He / T. Arai, H. Yayama, K. Kono // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 496–503. — Бібліогр.: 28 назв. — англ. 0132-6414 PACS: 67.63.Gh;67.25.–k;68.03–g https://nasplib.isofts.kiev.ua/handle/123456789/116927 We demonstrate a possibility that helium surface electrons at cryogenic temperatures can be used as a
 new source of very low energy electrons. Since both electrons (e¯) and hydrogen atoms (H) are bound on liquid
 helium surface, two-dimensional mixture gas of these two species is available on the surface. We found
 that low energy collision of e¯ and H drives electron attachment to form a negative hydrogen ion (H¯) in the
 mixture. From our temperature dependence measurement of the reaction rate, it was found that another H
 atom participate in the reaction. Namely, the reaction is expressed as H + H + e¯ → H¯ + H. Possible reaction
 mechanisms are discussed in terms of direct three-body process and dissociative attachment process. Measurements
 in applied magnetic field (B) show that the reaction rate coefficient is suppressed as ~ B⁻². This
 implies that electron spin singlet collision is relevant for electron attachment. This work has been supported by President’s Special Research Grant of RIKEN, Grant-in-Aid for Scientific Research (B) from JSPS and Grant-in-Aid for Exploratory Research from MEXT. We thank T. Shiino and T. Mitsui for partial collaboration. We are grateful to A. Wrl and P. Leiderer for VCE installation and valuable discussions. We are grateful to T. Kumada for informing us the charge-induced dipole interaction. This work was carried out under the Joint Research Program of the Institute for Solid State Physics, University of Tokyo. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Электроны над жидким гелием Electron attachment to atomic hydrogen on the surface of liquid ⁴He Article published earlier |
| spellingShingle | Electron attachment to atomic hydrogen on the surface of liquid ⁴He Arai, T. Yayama, H. Kono, K. Электроны над жидким гелием |
| title | Electron attachment to atomic hydrogen on the surface of liquid ⁴He |
| title_full | Electron attachment to atomic hydrogen on the surface of liquid ⁴He |
| title_fullStr | Electron attachment to atomic hydrogen on the surface of liquid ⁴He |
| title_full_unstemmed | Electron attachment to atomic hydrogen on the surface of liquid ⁴He |
| title_short | Electron attachment to atomic hydrogen on the surface of liquid ⁴He |
| title_sort | electron attachment to atomic hydrogen on the surface of liquid ⁴he |
| topic | Электроны над жидким гелием |
| topic_facet | Электроны над жидким гелием |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/116927 |
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