First Measurement of Beta Decay Half-lives in Neutron-rich Tl and Bi Isotopes
- Benzoni, G.
- Morales, A. I.
- Valiente-Dobon, J. J.
- Gottardo, A.
- Bracco, A.
- Camera, F.
- Crespi, F. C. L.
- Corsi, A. M.
- Leoni, S.
- Million, B.
- Nicolini, R.
- Wieland, O.
- Gadea, A.
- Lunardi, S.
- Boutachkov, P.
- Bruce, A. M.
- Gorska, M.
- Grebosz, J.
- Pietri, S.
- Podolyak, Zs.
- Pfuetzner, M.
- Regan, P. H.
- Weick, H.
- Alcantara Nunez, J.
- Algora, A.
- Al-Dahan, N.
- de Angelis, G.
- Ayyad, Y.
- Alkhomashi, N.
- Allegro, P. R. P.
- Bazzacco, D.
- Benlliure, J.
- Bowry, M.
- Bunce, M.
- Casarejos, E.
- Cortes, M. L.
- Bacelar, A. M. Denis
- Deo, A. Y.
- Domingo-Pardo, C.
- Doncel, M.
- Dombradi, Zs.
- Engert, T.
- Eppinger, K.
- Farrelly, G. F.
- Farinon, F.
- Farnea, E.
- Geissel, H.
- Gerl, J.
- Goel, N.
- Gregor, E.
- Habermann, T.
- Hoischen, Robert
- Janik, R.
- Klupp, S.
- Kojouharov, I.
- Kurz, N.
- Mandal, S.
- Menegazzo, R.
- Mengoni, D.
- Napoli, D. R.
- Naqvi, F.
- Nociforo, C.
- Prochazka, A.
- Prokopowicz, W.
- Recchia, F.
- Ribas, R. V.
- Reed, M. W.
- Rudolph, Dirk
- Sahin, E.
- Schaffner, H.
- Sharma, A.
- Sitar, B.
- Siwal, D.
- Steiger, K.
- Strmen, P.
- Swan, T. P. D.
- Szarka, I.
- Ur, C. A.
- Walker, P. M.
- Wollersheim, H. -J.
DOIAbstract
Neutron-rich isotopes around lead, beyond N = 126, have been studied exploiting the fragmentation of an uranium primary beam at the FRS-RISING setup at GSI. For the first time beta-decay half-lives of Bi-219 and Tl-211,Tl-212,Tl-213 isotopes have been derived. The half-lives have been extracted using a numerical simulation developed for experiments in high-background conditions. Comparison with state of the art models used in r-process calculations is given, showing a systematic underestimation of the experimental values, at variance from close-lying nuclei. (c) 2012 Elsevier B.V. All rights reserved
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