Beta decay of exotic T-Z =-1,-2 nuclei: the interesting case of Zn-56
Author
Cakirli, Rabia Burcu
THOMAS, J. C.
Kozer, H. C.
Kucuk, L.
Bilgier, B.
Ganioğlu, Ela
Susoy, G.
Agramunt, J.
Algora, A.
Ascher, P.
Caceres, L.
Fujita, H.
Gerbaux, M.
Giovinazzo, J.
Grevy, S.
Kamalou, O.
ORRIGO, S. E. A.
Rubio, B.
Fujita, Y.
Blank, B.
Gelletly, W.
Kurtukian-Nieto, T.
Molina, F.
Popescu, L.
ROGERS, A. M.
Stodel, C.
Suzuki, T.
Tamii, A.
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The beta decay properties of the T-z = -2, Zn-56 isotope and other proton-rich nuclei in the fp-shell have been investigated in an experiment performed at GANIL. The ions were produced in fragmentation reactions and implanted in a double-sided silicon strip detector surrounded by Ge EXOGAM clovers. Preliminary results for Zn-56 are presented. The Zn-56 decay proceeds mainly by beta delayed proton emission, but beta delayed gamma rays were also detected. Moreover, the exotic beta delayed gamma-proton decay was observed for the first time. The Zn-56 half-life and the energy levels populated in the Cu-56 daughter have been determined. Knowledge of the gamma de-excitation of the mirror states in Co-56 and the comparison with the results of the mirror charge exchange process, the Fe-56(He-3,t) reaction (where Fe-56 has T-z = +2), were important in the interpretation of the Zn-56 decay data. The absolute Fermi and Gamow-Teller strengths have been deduced.
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