First measurement of beta decay half-lives in neutron-rich Tl and Bi isotopes

G. Benzoni, A. I. Morales, J. J. Valiente-Dobón, A. Gottardo, A. Bracco, F. Camera, F. C.L. Crespi, A. M. Corsi, S. Leoni, B. Million, R. Nicolini, O. Wieland, A. Gadea, S. Lunardi, P. Boutachkov, A. M. Bruce, M. Górska, J. Grebosz, S. Pietri, Zs PodolyakM. Pfützner, P. H. Regan, H. Weick, J. Alcántara Núñez, A. Algora, N. Al-Dahan, G. de Angelis, Y. Ayyad, N. Alkhomashi, P. R.P. Allegro, D. Bazzacco, J. Benlliure, M. Bowry, M. Bunce, E. Casarejos, M. L. Cortes, A. M. Denis Bacelar, A. Y. Deo, C. Domingo-Pardo, M. Doncel, Zs Dombradi, T. Engert, K. Eppinger, G. F. Farrelly, F. Farinon, E. Farnea, H. Geissel, J. Gerl, N. Goel, E. Gregor, T. Habermann, R. Hoischen, R. Janik, S. Klupp, I. Kojouharov, N. Kurz, S. Mandal, R. Menegazzo, D. Mengoni, D. R. Napoli, F. Naqvi, C. Nociforo, A. Prochazka, W. Prokopowicz, F. Recchia, R. V. Ribas, M. W. Reed, D. Rudolph, E. Sahin, H. Schaffner, A. Sharma, B. Sitar, D. Siwal, K. Steiger, P. Strmen, T. P.D. Swan, I. Szarka, C. A. Ur, P. M. Walker, H. J. Wollersheim

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Abstract

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 β-decay half-lives of Bi 219 and Tl 211,212,213 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.

Original languageEnglish
Pages (from-to)293-297
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume715
Issue number4-5
DOIs
Publication statusPublished - Sep 10 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Benzoni, G., Morales, A. I., Valiente-Dobón, 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., Górska, M., Grebosz, J., Pietri, S., ... Wollersheim, H. J. (2012). First measurement of beta decay half-lives in neutron-rich Tl and Bi isotopes. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 715(4-5), 293-297. https://doi.org/10.1016/j.physletb.2012.07.063