The Cu-65 nucleuswas populated by the Ni-64(Li-7,alpha 2n)Cu-65 reaction and the lifetime of the 9/2(+) state at 2.5 MeV was measured by electronic fast-timing technique, providing the value tau = 37(3) ps. The reduced transition probability B(E3) = 8.82(165) W.u. is deduced and compared to theoretical predictions in the framework of a particle-vibration (weak) coupling model. The results indicate that the 9/2(+) state is a member of the 3(-)circle times pi p3/2 multiplet, built by coupling the octupole 3(-) phonon of Ni-64 to an unpaired proton in the p(3/2) level, confirming the robustness of core excitations in the medium mass nucleus Ni-64.

Probing particle-phonon-coupled states in the neutron-rich nucleus Cu-65 by lifetime measurements with fast-timing techniques / G. Bocchi, S. Leoni, S. Bottoni, G. Benzoni, A. Bracco, P.F. Bortignon, G. Colo, B. Belvito, C.R. Nit¸a, N. Marginean, D. Filipescu, D. Ghita, T. Glodariu, R. Lica, R. Marginean, C. Mihai, A. Negret, T. Sava, L. Stroe, S. Toma, D. Bucurescu, I. Georghe, R. Suvail ˘ a, D. Deleanu, C.A. Ur, A.S. Aydin. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 89:5(2014), pp. 054302.1-054302.7. [10.1103/PhysRevC.89.054302]

Probing particle-phonon-coupled states in the neutron-rich nucleus Cu-65 by lifetime measurements with fast-timing techniques

G. Bocchi
;
S. Leoni
;
S. Bottoni
;
A. Bracco
;
G. Colo
;
2014

Abstract

The Cu-65 nucleuswas populated by the Ni-64(Li-7,alpha 2n)Cu-65 reaction and the lifetime of the 9/2(+) state at 2.5 MeV was measured by electronic fast-timing technique, providing the value tau = 37(3) ps. The reduced transition probability B(E3) = 8.82(165) W.u. is deduced and compared to theoretical predictions in the framework of a particle-vibration (weak) coupling model. The results indicate that the 9/2(+) state is a member of the 3(-)circle times pi p3/2 multiplet, built by coupling the octupole 3(-) phonon of Ni-64 to an unpaired proton in the p(3/2) level, confirming the robustness of core excitations in the medium mass nucleus Ni-64.
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/499122
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