1. Improved Limits on β[sup –] and β[sup –]β[sup –] Decays of [sup 48]Ca.
- Author
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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., and Timkin, V. V.
- Subjects
BETA decay ,ISOTOPES ,CHEMICAL purification - 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”. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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