BRAZILIAN JOURNAL OF PHYSICS, cilt.52, sa.3, 2022 (SCI-Expanded)
One of the successes in describing the nuclear structure correctly is taking into account the spin-orbit interaction. Thus, single-particle energies and nuclear magic numbers can be obtained accurately. The main subject of this study is to investigate how the strength of this spin-orbit interaction affects the nuclear structure, more specifically the nuclear spectra. In this study we carried out for this purpose, we obtained neutron single-particle energies by changing the strength of the spin-orbit term included in the Woods-Saxon potential. By using the neutron single-particle orbit energies in the calculations of the nuclear shell model, which we obtained for different strengths of spin-orbit term, we obtained the ground and low-lying excited states of the O-18 isotope. According to the results, we observed that spin-orbit interactions of different strength have a discernible effect on the nuclear spectra.