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Письма в Журнал экспериментальной и теоретической физики, 2002, том 76, выпуск 9, страницы 643–644
(Mi jetpl2967)
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Эта публикация цитируется в 9 научных статьях (всего в 9 статьях)
ПОЛЯ, ЧАСТИЦЫ, ЯДРА
Improved limits on $\beta^-$ and $\beta^-\beta^-$ decays of $^{48}$Ca
A. Bakalyarova, A. Balysha, A. S. Barabashb, P. Benesc, Ch. Briancond, V. Brudanine, P. Cermákc, V. Egorove, F. Hubertf, Ph. Hubertf, N. A. Koroleve, V. N. Kosjakova, A. Kovalike, N. A. Lebedeve, V. I. Lebedeva, A. F. Novgorodove, N. I. Rukhadzee, I. Šteklc, V. Timkine, I. E. Veleshkoa, Ts. D. Vylove, V. I. Umatovb a Russian Research Centre "Kurchatov Institute", Moscow
b Institute for Theoretical and Experimental Physics (Russian Federation State Scientific Center), Moscow
c FNSPE, Czech Technical University
d Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3-CNRS et Université Paris-Sud
e Joint Institute for Nuclear Research, Dubna, Moskovskaya obl.
f Centre Etudes Nucléaires de Bordeaux-Gradignan, IN2P3-CNRS et Université de Bordeaux
Аннотация:
New limits on $^{48}$Ca $\beta^-$ and $\beta^-\beta^-$ decays to excited states of $^{48}$Ti have been obtained using a 400 cm$^3$ low-background HPGe detector and an external source of 24.558 g enriched CaF$_2$ powder (9.822 g of $^{48}$Ca). The limits for $\beta^-$ decay to the $6^+$ ground state, excited $5^+$ and $4^+$ states in $^{48}$Sc are $1.6\cdot 10^{20}$ yr, $2.5\cdot 10^{20}$ yr, and $1.9\cdot 10^{20}$ yr at the 90% confidence level. For the $\beta^-\beta^-$ decay to $^{48}$Ti the limits to the first $2^+$, second $2^+$ and first $0^+$ excited states are $1.8\cdot 10^{20}$ yr, $1.5\cdot 10^{20}$ yr, and $1.5\cdot 10^{20}$ yr again at the 90% confidence level.
Поступила в редакцию: 12.09.2002
Образец цитирования:
A. Bakalyarov, A. Balysh, A. S. Barabash, P. Benes, Ch. Briancon, V. Brudanin, P. Cermák, V. Egorov, F. Hubert, Ph. Hubert, N. A. Korolev, V. N. Kosjakov, A. Kovalik, N. A. Lebedev, V. I. Lebedev, A. F. Novgorodov, N. I. Rukhadze, I. Štekl, V. Timkin, I. E. Veleshko, Ts. D. Vylov, V. I. Umatov, “Improved limits on $\beta^-$ and $\beta^-\beta^-$ decays of $^{48}$Ca”, Письма в ЖЭТФ, 76:9 (2002), 643–644; JETP Letters, 76:9 (2002), 545–547
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl2967 https://www.mathnet.ru/rus/jetpl/v76/i9/p643
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