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Neutron versus proton scattering on exotic nuclei: The 9He exampleстатья
- Авторы: Khirk M.S., Grigorenko L.V., Lanskoy D.E., Sharov P.G.
- Журнал: Physical Review C - Nuclear Physics
- Том: 111
- Номер: 5
- Год издания: 2025
- Издательство: American Physical Society
- Местоположение издательства: United States
- Номер статьи: L051601
- DOI: 10.1103/PhysRevC.111.L051601
- Аннотация: Neutron scattering on exotic nuclides is a class of processes that cannot be studied directly now and in any foreseeable future. Resonance proton scattering of exotic nuclide on a thick target in inverse kinematics can be used to infer the properties of the low-energy neutron scattering of this nuclide, assuming the isobaric symmetry. However, the results of such resonance proton scattering reactions have so far been analyzed in theoretical approaches (optical, R-matrix models), which are missing important aspects of isospin dynamics, isospin violation in continuum, and threshold dynamics. The isospin-conserving coupled-channel model (ICM) is proposed, providing a more reliable basis for understanding such experimental studies. Qualitatively different phase shifts for the 8He+𝑝𝑇=5/2 and 𝑇=3/2 resonances are predicted by ICM with a quite unusual profile for the 𝑇=5/2 states. An alternative interpretation of the existing 8He+𝑝 data is proposed. The observable properties of the 𝑇=5/2 resonances may be strongly affected by the isobaric-partner 𝑇=3/2 states. The crucial importance of studies of the neutron-emission channel for disentangling this possible influence is demonstrated.
- Добавил в систему: Ланской Дмитрий Евгеньевич