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Experimental Sign of a Weakening of the N=50 Spherical Shell Gap

Abstract : High-spin states of $^{84}$Se, produced as a fission fragment in the fusion-fission reaction $^{18}O+^{208}$Pb, have been identified for the first time thanks to the EUROBALL IV array. The excitation energies of three of these states, interpreted as being due to the ($\nu g_9/2^-1 \nu d_5/2^+1 $) neutron-core excitation, give new insights about the evolution of the N=50 shell gap at the vicinity of $^{78}$Ni.
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http://hal.in2p3.fr/in2p3-00123157
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Submitted on : Monday, January 8, 2007 - 3:15:49 PM
Last modification on : Wednesday, September 16, 2020 - 4:17:24 PM

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A. Prévost, A. Astier, I. Deloncle, M.-G. Porquet, F. Azaiez, et al.. Experimental Sign of a Weakening of the N=50 Spherical Shell Gap. Frontiers in Nuclear Structure, Astrophysics, and Reactions - FINUSTAR, Sep 2005, Isle of Kos, Greece. pp.538-540, ⟨10.1063/1.2201008⟩. ⟨in2p3-00123157⟩

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