Decay properties of Mn-68,Mn-69,Mn-70: Probing collectivity up to N=44 in Fe isotopic chain
Author
SOEDERSTROEM, P. -A.
BLASI, N.
BRACCO, A.
CAMERA, F.
CERUTI, S.
CRESPI, F. C. L.
DE ANGELIS, G.
DELATTRE, M. -C.
DOMBRADI, Zs.
GOTTARDO, A.
ISOBE, T.
KUTI, I.
MATSUI, K.
MELON, B.
MENGONI, D.
MIYAZAKI, T.
MODAMIO-HOYBJOR, V.
MOMIYAMA, S.
NAPOLI, D. R.
NIIKURA, M.
ORLANDI, R.
SAKURAI, H.
SAHIN, E.
SOHLER, D.
TANIUCHI, R.
TAPROGGE, J.
VAJTA, Zs.
VALIENTE-DOBON, J. J.
WIELAND, O.
Yalcinkaya, Mehtap
WATANABE, H.
Browne, F.
Daido, R.
DOORNENBAL, P.
BENZONI, G.
MORALES, A. I.
NISHIMURA, S.
CORAGGIO, L.
ITACO, N.
GARGANO, A.
Fang, Y.
LORUSSO, G.
PATEL, Z.
RICE, S.
SINCLAIR, L.
Sumikama, T.
WU, J.
XU, Z. Y.
YOKOYAMA, R.
BABA, H.
AVIGO, R.
GARROTE, F. L. Bello
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The beta decays Mn-68 -> Fe-68 -> Mn-69 -> Fe-69 and Mn-70 -> Fe-70 have been measured at the RIBF facility at RIKEN using the EURICA gamma spectrometer combined with an active stopper consisting of a stack of Si detectors. The nuclei were produced as fission fragments from a beam of U-238 at a bombarding energy of (345) MeV/nucleon impinging on a Be target and selected using the BigRIPS separator. Half-lives and beta-delayed neutron emission probabilities have been extracted for these decays, together with first experimental information on excited states populated in Fe-69,Fe-70. The data indicate a continuously increasing deformation for Fe isotopes up to A = 70. This is interpreted, as for Cr isotopes, in terms of the interplay between the quadrupole correlations of the nu 1d(5/2) and nu 0g(9/2) orbitals and the monopole component of the pi 0f(7/2)-nu 0f(5/2) interaction. (C) 2015 The Authors. Published by Elsevier B.V.
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