Электронный каталог

Статья

Khirk, M.S.
Neutron Versus Proton Scattering on Exotic Nuclei: The *9He Example / M.S.Khirk, L.V.Grigorenko, D.E.Lanskoy, P.G.Sharov. – Text: electronic // Physical Review C. – 2025. – Vol. 111, No. 5. – P. L051601. – URL: https://doi.org/10.1103/PhysRevC.111.L051601.

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 *8 He +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 *8 He +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.



ОИЯИ = ОИЯИ (JINR)2025