Abstract
The structure of nuclei around the neutron-rich nucleus is of particular interest due to the vicinity of the and shell closures and the -process nucleosynthetic path. Four states in with a strong single-particle-like component have previously been studied via the () reaction, with limited excitation energy resolution. The and single-neutron transfer reactions were performed in inverse kinematics at the Holifield Radioactive Ion Beam Facility using particle- coincidence spectroscopy. The uncertainties in the energies of the single-particle-like states have been reduced by more than an order of magnitude using the energies of rays. The previous tentative values have been confirmed. Decays from high-spin states in have been observed following transfer on the isomeric component of the beam. The improved energies and confirmed spin-parities of the -wave states important to the -process lead to direct-semidirect cross sections for neutron capture on the ground state of at 30 keV that are in agreement with previous analyses. A similar assessment of the impact of neutron-transfer on the isomer would require significant nuclear structure and reaction theory input. There are few measurements of transfer reaction on isomers, and this is the first on an isomer in the region.
- Received 8 November 2021
- Accepted 21 January 2022
DOI:https://doi.org/10.1103/PhysRevC.105.024602
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