منابع مشابه
Two-proton knockout on neutron-rich nuclei
Two-proton knockout reactions on neutron-rich nuclei [1] have been studied in inverse kinematics at intermediate energy. Strong evidence that the two-proton removal from a neutron-rich system proceeds as a direct reaction is presented, together with a preliminary theoretical discussion of the partial cross sections based on eikonal reaction theory and the many-body shell model. They show that t...
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We propose to search for proton dipole pygmy resonances in nuclei near the proton drip line. Experimental evidence only exists for neutron pygmy resonances, but calculations infer the occurrence of proton pygmy resonances in proton-rich nuclei in the mass region A = 30 – 50. According to recent RQRPA calculations, low-lying E1 transitions, well below the giant dipole resonance, reveal the dynam...
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For simple models of the nuclear charge operator, measurements of the Coulomb sum and the charge form factor of a nucleus directly determine the proton-proton correlations. We examine experimental results obtained for few-body nuclei at Bates and Saclay using models of the charge operator that include both oneand two-body terms. Previous analyses using one-body terms only have failed to reprodu...
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Decay studies of very neutron-deficient nuclei ranging from 39 Ti to 49 Ni have been performed during a projectile fragmentation experiment at the GANIL/LISE3 separator. 49 Ni, half-lives and decay spectra have been measured. In a few cases, γ coincidence measurements helped to successfully identify the initial and final states of transitions. In these cases, partial decay scheme are proposed. ...
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Unlike their lighter counterparts, most odd-odd N = Z nuclei with mass A > 40 have ground states with isospin T=1, suggesting an increased role for the isovector pairing interaction. A simple SO(5) seniority-like model of this interaction reveals a striking and heretofore unnoticed interplay between likeparticle and neutron-proton isovector pairing near N = Z that is reflected in the number of ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2013
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.110.022502