The β-decay approach for studying 12C

H. O.U. Fynbo, C. Aa Diget, S. Hyldegaard, H. B. Jeppesen, H. H. Knudsen, O. Kirsebom, K. Riisager, M. Alcorta, R. Boutami, M. J.G. Borge, M. Madurga, O. Tengblad, S. Brandenburg, P. Dendooven, K. Jungmann, G. J.G. Onderwater, A. Rogachevskly, M. Sohani, E. Traykov, H. W. WilschutJ. Büscher, P. Van Duppen, M. Huyse, R. Raabe, T. Eronen, J. Huikary, A. Jokinen, A. Kankainen, K. Perajärvi, I. Moore, A. Nieminen, H. Penttilä, S. Rinta-Antila, A. Saastamoinen, Y. Wang, J. Äystö, B. Jonson, T. Nilsson, G. Nyman, K. Wilhelmsen, B. Fulton, S. Fox, F. C. Barker

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The β-decays of the mirror nuclei 12B and 12N both populate states in 12C and they are therefore a precious source of information about this nucleus. Due to the selection rules of β-decay only 0+, 1+ and 2+ states are populated. This allows a very clean study of unbound states just above the 3α-threshold with those spin and parities. This probe has been applied in two experiments using two complementary experimental techniques: in the first the three α-particles emitted after β-decay are measured in coincidence in separate detectors using the ISOL method, while in the second method 12B and 12N are implanted in a detector and the summed energy of the three α-particles is measured directly. Preliminary results from the two approaches are presented.

Original languageEnglish
Article number012003
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 1 May 2008

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