Decay properties of Mn; Probing collectivity up to N=44 in Fe isotopic chain

Benzoni, G.*; Morales, A. I.*; Watanabe, H.*; Nishimura, Shunji*; Coraggio, L.*; Itaco, N.*; Gargano, A.*; Browne, F.*; Daido, R.*; Doornenbal, P.*; Fang, Y.*; Lorusso, G.*; Patel, Z.*; Rice, S.*; Sinclair, L.*; Sderstrm, P.-A.*; Sumikama, Toshiyuki*; Wu, J.*; Xu, Z. Y.*; Yokoyama, R.*; Baba, Hidetada*; Avigo, R.*; Bello Garrote, F. L.*; Blasi, N.*; Bracco, A.*; Camera, F.*; Ceruti, S.*; Crespi, F. C. L.*; De Angelis, G.*; Delattre, M.-C.*; Dombrdi, Zs.*; Gottardo, A.*; Isobe, T.*; Kuti, I.*; Matsui, K.*; Melon, B.*; Mengoni, D.*; Miyazaki, T.*; Modamio-Hoybjor, V.*; Momiyama, S.*; Napoli, D. R.*; Niikura, Megumi*; Orlandi, R.  ; Sakurai, Hiroyoshi*; Sahin, E.*; Sohler, D.*; Taniuchi, Ryo*; Taprogge, J.*; Vajta, Zs.*; Valiente-Dobn, J. J.*; Yalcinkaya, M.*; Wieland, O.*

The decays of Mn have been measured at the RIBF facility at RIKEN using the EURICA spectrometer combined with an active stopper consisting of a stack of Si detectors. Half-lives and -delayed neutron emission probabilities have been extracted for these decays, together with first experimental information on excited states populated in Fe. The data indicate a continuously increasing deformation for Fe isotopes up to A=70, and interpreted to be due to the interplay between quadrupole correlation of specific neutron orbitals and the monopole component of the proton-neutron interaction.