Abstract
Bound states and low-lying resonances of the 11Be one-neutron halo nucleus have been calculated within a two-body cluster model with core excitation. The lowest 10Be core excited 2+ state was considered as a quadrupole vibration. Shallow potentials were applied for neutron-core interaction, preventing motion in Pauli forbidden orbits. A good description of available experimental data including dipole excitations of 11Be was obtained. For the bound 1/2− excited state the \(\left[ {p_{3/2} \otimes 2^ + } \right]_{1/2^ - }\) wave-function component gives the dominant contribution to the structure, which differs from results obtained in cluster models with deep potentials.
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We cordially dedicate this work to Spartak T. Belyaev on the occasion of his 90th birthday
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Ershov, S.N., Vaagen, J.S. & Zhukov, M.V. Cluster model with core excitations. The 11Be example. Phys. Atom. Nuclei 77, 989–998 (2014). https://doi.org/10.1134/S1063778814070072
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DOI: https://doi.org/10.1134/S1063778814070072