Beta Decay Study of the T-z = -2 $^{56}$Zn Nucleus and the Determination of the Half-Lives of a Few fp-shell Nuclei

B. Rubio , S.E.A. Orrigo , L. Kucuk , A. Montaner-Piza , Y. Fujita , H. Fujita , Bertram Blank (1) , W. Gelletly , T. Adachi , J. Agramunt , A. Algora , P. Ascher (1) , B. Bilgier , L. Caceres (2) , R.B. Cakirli , G. de France (2) , E. Ganioglu , M. Gerbaux , J. Giovinazzo (1) , S. Grévy (1) , O. Kamalou (2) , H.C. Kozer , T. Kurtukian Nieto (1) , F.M. Marqués (3) , F. Molina , Y. Oktem , Francois de Oliveira Santos (2) , L. Perrot (4) , L. Popescu , R. Raabe , A.M. Rogers , P.C. Srivastava , G. Susoy , T. Suzuki , A. Tamii , J.C. Thomas (2)

1 NEX - Noyaux exotiques
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 IPNO - Institut de Physique Nucléaire d'Orsay

This paper concerns the experimental study of the β decay properties of few proton-rich fp -shell nuclei. The nuclei were produced at GANIL in fragmentation reactions, separated with the LISE spectrometer and stopped in an implantation detector surrounded by Ge detectors. The β -delayed gammas, β -delayed protons and the exotic β -delayed gamma-proton emission have been studied. Preliminary results are presented. The decay of the Tz=−2Tz=−2 nucleus 56Zn has been studied in detail. Information from the β-delayed protons and β-delayed gammas has been used to deduce the decay scheme. The exotic beta-delayed gamma-proton decay has been observed for the first time in the fp-shell. The interpretation of the data was made possible thanks to the detailed knowledge of the mirror Charge Exchange (CE) process and the gamma de-excitation of the states in 56Co, the mirror nucleus of 56Cu.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

B. Rubio, S.E.A. Orrigo, L. Kucuk, A. Montaner-Piza, Y. Fujita, et al.. Beta Decay Study of the T-z = -2 $^{56}$Zn Nucleus and the Determination of the Half-Lives of a Few fp-shell Nuclei. International Conference on Nuclear Data for Science and Technology (ND2013), Mar 2013, New York, United States. pp.37-40, ⟨10.1016/j.nds.2014.06.135⟩. ⟨in2p3-01037921⟩