Shell structure of the neutron-rich isotopes Co69,71,73

T. Lokotko et al.
Phys. Rev. C 101, 034314 – Published 30 March 2020

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 γγ 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.

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  • Received 20 September 2019
  • Revised 21 February 2020
  • Accepted 6 March 2020

DOI:https://doi.org/10.1103/PhysRevC.101.034314

©2020 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 101, Iss. 3 — March 2020

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