Regular Article - Theoretical Physics
Single-particle structure of the N = 20, 28 isotones within the dispersive optical model
Skobeltsyn Institute of Nuclear Physics, Moscow State University, Leninskie gory 1(2), 119991, GSP-1, Moscow, Russia
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Accepted: 23 September 2019
Published online: 18 November 2019
The neutron single-particle characteristics of the isotones at were calculated within the dispersive optical model. The global parameters of the spin-orbit and imaginary parts of the potential as well as surface absorption independent on neutron-proton asymmetry and increased diffuseness at large neutron excess were used in the calculations. The suitability of the global parameters to predict the evolution of the neutron single-particle structure of nuclei near the neutron drip line was investigated. The following results are in agreement with the available experimental data: the reduction of the particle-hole energy gaps, the degeneration of the and states and then a change in the , level sequence and more rapid reduction of the -splitting in comparison with the -splitting with Z decreasing. The predictive power of the dispersive optical model with respect to neutron-rich nuclei is demonstrated.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019