Decay properties of 68,69,70 Mn: Probing collectivity up to N = 44 in Fe isotopic chain

G. Benzoni, A.I. Morales, H. Watanabe, S. Nishimura, L. Coraggio, N. Itaco, A. Gargano, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso (+40 others)
2015 Physics Letters B  
The β decays 68 Mn → 68 Fe, 69 Mn → 69 Fe and 70 Mn → 70 Fe have been measured at the RIBF facility at RIKEN using the EURICA γ spectrometer combined with an active stopper consisting of a stack of Si detectors. The nuclei were produced as fission fragments from a beam of 238 U at a bombarding energy of 345 MeV/nucleon impinging on a Be target and selected using the BigRIPS separator. Halflives and β-delayed neutron emission probabilities have been extracted for these decays, together with
more » ... experimental information on excited states populated in 69,70 Fe. The data indicate a continuously increasing deformation for Fe isotopes up to A = 70. This is interpreted, as for Cr isotopes, in terms of
doi:10.1016/j.physletb.2015.10.025 fatcat:6jfyltm5r5ae3orfkfy7emfasi