https://doi.org/10.1140/epja/i2019-12894-y
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
* e-mail: besp@sinp.msu.ru
Received:
27
February
2019
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
