Spontaneous double alpha decay: First experimental limit and prospects of investigation
Nuclear decays with simultaneous emission of two alpha particles are energetically possible for a number of nuclides. Prospects of searching for such kind of decay for nuclides present in the natural isotopic composition of elements are discussed here. The first experimental limit on half-life for 2...
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| Format: | Article |
| Language: | English |
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Institute for Nuclear Research, National Academy of Sciences of Ukraine
2021-06-01
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| Series: | Ядерна фізика та енергетика |
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| Online Access: | http://jnpae.kinr.kiev.ua/22.2/Articles_PDF/jnpae-2021-22-0121-Tretyak.pdf |
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| _version_ | 1850252872947597312 |
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| author | V. I. Tretyak |
| author_facet | V. I. Tretyak |
| author_sort | V. I. Tretyak |
| collection | DOAJ |
| description | Nuclear decays with simultaneous emission of two alpha particles are energetically possible for a number of nuclides. Prospects of searching for such kind of decay for nuclides present in the natural isotopic composition of elements are discussed here. The first experimental limit on half-life for 2α decay is set for 209Bi as T1/2 > 2.9·1020 y at 90 % C.L., using the data of work [P. de Marcillac et al. Nature 422 (2003) 876]. Theoretical T1/2 estimations for the process are also given. Using these values, which are on the level of 1033 y or more, one can conclude that the prospects of experimental observation of 2α decay are very pessimistic. |
| format | Article |
| id | doaj-art-5baa9edf270d4418933d080cf0939f2a |
| institution | OA Journals |
| issn | 1818-331X 2074-0565 |
| language | English |
| publishDate | 2021-06-01 |
| publisher | Institute for Nuclear Research, National Academy of Sciences of Ukraine |
| record_format | Article |
| series | Ядерна фізика та енергетика |
| spelling | doaj-art-5baa9edf270d4418933d080cf0939f2a2025-08-20T01:57:32ZengInstitute for Nuclear Research, National Academy of Sciences of UkraineЯдерна фізика та енергетика1818-331X2074-05652021-06-01222121126https://doi.org/10.15407/jnpae2021.02.121Spontaneous double alpha decay: First experimental limit and prospects of investigationV. I. Tretyak0Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, UkraineNuclear decays with simultaneous emission of two alpha particles are energetically possible for a number of nuclides. Prospects of searching for such kind of decay for nuclides present in the natural isotopic composition of elements are discussed here. The first experimental limit on half-life for 2α decay is set for 209Bi as T1/2 > 2.9·1020 y at 90 % C.L., using the data of work [P. de Marcillac et al. Nature 422 (2003) 876]. Theoretical T1/2 estimations for the process are also given. Using these values, which are on the level of 1033 y or more, one can conclude that the prospects of experimental observation of 2α decay are very pessimistic.http://jnpae.kinr.kiev.ua/22.2/Articles_PDF/jnpae-2021-22-0121-Tretyak.pdfdouble alpha decaylow background experimentstheoretical and experimental half-lives. |
| spellingShingle | V. I. Tretyak Spontaneous double alpha decay: First experimental limit and prospects of investigation Ядерна фізика та енергетика double alpha decay low background experiments theoretical and experimental half-lives. |
| title | Spontaneous double alpha decay: First experimental limit and prospects of investigation |
| title_full | Spontaneous double alpha decay: First experimental limit and prospects of investigation |
| title_fullStr | Spontaneous double alpha decay: First experimental limit and prospects of investigation |
| title_full_unstemmed | Spontaneous double alpha decay: First experimental limit and prospects of investigation |
| title_short | Spontaneous double alpha decay: First experimental limit and prospects of investigation |
| title_sort | spontaneous double alpha decay first experimental limit and prospects of investigation |
| topic | double alpha decay low background experiments theoretical and experimental half-lives. |
| url | http://jnpae.kinr.kiev.ua/22.2/Articles_PDF/jnpae-2021-22-0121-Tretyak.pdf |
| work_keys_str_mv | AT vitretyak spontaneousdoublealphadecayfirstexperimentallimitandprospectsofinvestigation |