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Title Microscopic structure of coexisting 0+ states in 68Ni probed via two-neutron transfer
Author(s) Flavigny, F (Orsay, IPN ; KU Leuven, Dept. Phys. Astron.) ; Elseviers, J (KU Leuven, Dept. Phys. Astron.) ; Andreyev, A N (York U., England ; JAEA, Ibaraki) ; Bauer, C (Darmstadt, Tech. Hochsch.) ; Bildstein, V (Guelph U.) ; Blazhev, A (Cologne U.) ; Brown, B A (Michigan State U., NSCL) ; De Witte, H (KU Leuven, Dept. Phys. Astron.) ; Diriken, J (KU Leuven, Dept. Phys. Astron. ; SCK-CEN, Mol) ; Fedosseev, V N (CERN) Zeige alle 39 Autoren
Publication 2019
Number of pages 6
In: Phys. Rev. C 99 (2019) 054332
DOI 10.1103/PhysRevC.99.054332
Subject category Nuclear Physics - Experiment
Abstract The structure of low-spin states originating from shape-coexisting configurations in 4068Ni28 was directly probed via the two-neutron transfer reaction 66Ni(t,p)68Ni in inverse kinematics using a radioactive ion beam on a radioactive target. The direct feeding to the first excited 0+ state was measured for center-of-mass angles 4°–16° and amounts to an integral of 4.2(16)% relative to the ground state. The observed difference in feeding of the 0+ states is explained by the transfer of neutrons, mainly in the pf shell below N=40 for the ground state, and across N=40 in the g9/2 orbital for the 02+, based on second-order distorted-wave Born approximation calculations combined with state-of-the-art shell-model two-nucleon amplitudes. However, the direct feeding to the 21+ state [29(3)%] is incompatible with these calculations.
Copyright/License publication: © 2019-2024 authors (License: CC-BY-4.0)

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