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Particle-core couplings close to neutron-rich doubly-magic nuclei

Abstract : Preliminary results are presented from a recent campaign of experiments, performed at the PF1B cold-neutron facility at ILL (Grenoble, France), in which $\gamma$-ray spectroscopy of neutron-rich nuclei produced in neutron induced fission on 235U and 241Pu targets was performed. By using the EXILL array, consisting of EXOGAM, GASP and ILL-Clover detectors, and a digital triggerless data acquisition system, coincidences over several microseconds time windows were studied. This allowed to obtain new information on nuclei around 132Sn, such as 132Te, 133Sb and 130Sn, in which microsecond isomeric states occur. Preliminary results on 210Bi, populated by cold-neutron capture, are also shown. The data offer the possibility to investigate the couplings between core excitations and valence particles, around the doubly magic nuclei 132Sn and 208Pb.
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Submitted on : Monday, May 11, 2015 - 11:24:58 AM
Last modification on : Tuesday, November 24, 2020 - 2:10:04 PM

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S. Leoni, G. Bocchi, S. Bottoni, D. Bazzacco, N. Cieplicka, et al.. Particle-core couplings close to neutron-rich doubly-magic nuclei. The Zakopane Conference on Nuclear Physics “Extremes of the Nuclear Landscape”,, Aug 2014, Zakopane, Poland. pp.637-646, ⟨10.5506/APhysPolB.46.637⟩. ⟨in2p3-01150418⟩



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