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Shell structure of the neutron-rich isotopes $^{69,71,73}\mathrm{Co}$

Abstract : The structures of the neutron-rich Co69,71,73 isotopes were investigated via (p,2p) knockout reactions at the Radioactive Isotope Beam Factory, RIKEN. Isotopes of interest were studied using the DALI2 γ-ray detector array combined with the MINOS target and tracker system. Level schemes were reconstructed using the γ-γ coincidence technique, with tentative spin-parity assignments based on the measured inclusive and exclusive cross sections. Comparison with shell-model calculations using the Lenzi-Nowacki-Poves-Sieja LNPS and PFSDG-U interactions suggests coexistence of spherical and deformed shapes at low excitation energies in the Co69,71,73 isotopes. The distorted-wave impulse approximation (DWIA) framework was used to calculate the single-particle cross sections. These values were compared with the experimental findings.
Keywords : Nuclear Structure
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Submitted on : Tuesday, December 15, 2020 - 10:14:32 AM
Last modification on : Wednesday, March 3, 2021 - 6:20:20 AM


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A. Poves, J.M. Gheller, J.Y. Roussé, Zs. Dombradi, P.A. Söderström, et al.. Shell structure of the neutron-rich isotopes $^{69,71,73}\mathrm{Co}$. Phys.Rev.C, 2020, 101 (3), pp.034314. ⟨10.1103/PhysRevC.101.034314⟩. ⟨hal-02550174⟩



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