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- Title
Improved Limits on β[sup –] and β[sup –]β[sup –] Decays of [sup 48]Ca.
- Authors
Bakalyarov, A.; Balysh, A.; Barabash, A. S.; Benes, P.; Briançon, Ch.; Brudanin, V.; Cermák, P.; Egorov, V.; Hubert, F.; Hubert, Ph.; Korolev, N. A.; Kosjakov, V. N.; Kovalik, A.; Lebedev, N. A.; Lebedev, V. I.; Novgorodov, A. F.; Rukhadze, N. I.; Stekl, N. I.; Timkin, V. V.
- Abstract
New limits on [sup 48]Caβ[sup –] and β[sup –]β[sup –] decays to excited states of [sup 48]Ti have been obtained using a 400cm[sup 3] low-background HPGe detector and an external source of 24.558g enriched CaF[sub 2] powder (9.822g of [sup 48]Ca). The limits for β[sup –] decay to the 6[sup +] ground state and excited 5[sup +] and 4[sup +] states in [sup 48]Sc are 1.6×10[sup 20] yr, 2.5×10[sup 20] yr, and 1.9×10[sup 20] yr at the 90% confidence level. For the β[sup –]β[sup –] decay to [sup 48]Ti, the limits to the first 2[sup +], second 2[sup +], and first 0[sup +] excited states are 1.8×10[sup 20] yr, 1.5×10[sup 20] yr, and 1.5×10[sup 20] yr, again at the 90% confidence level. © 2002 MAIK “Nauka / Interperiodica”.
- Subjects
BETA decay; ISOTOPES; CHEMICAL purification
- Publication
JETP Letters, 2002, Vol 76, Issue 9, p545
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/1.1538286