Abstract
Background: Resonance scattering has been extensively used to study the structure of exotic, neutron-deficient nuclei. Extension of the resonance scattering technique to neutron-rich nuclei was suggested more than 20 years ago. This development is based on the isospin conservation law. In spite of broad field of the application, it has never gained a wide-spread acceptance.
Purpose: To benchmark the experimental approach to study the structure of exotic neutron-rich nuclei through resonance scattering on a proton target.
Method: The excitation function for resonance scattering is measured using a thick target by recording coincidence between light and heavy recoils, populating isobaric analog states (IAS) in .
Results: A good fit of the resonance elastic scattering excitation function was obtained using previously tentatively known state at 18.65 MeV in and a new broad -wave state—the at 18.5 MeV. These results fit the expected isomirror properties for the isoquartet.
Conclusions: Our analysis confirmed isospin as a good quantum number for the investigated highly excited states and demonstrated that studying the structure of neutron-rich exotic nuclei through IAS is a promising approach.
- Received 21 May 2020
- Accepted 1 July 2020
DOI:https://doi.org/10.1103/PhysRevC.102.014615
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