Ground state properties and bubble structure of the isotopic chains of Z = 125 and 126 using the relativistic mean-field formalism

• Published in: Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2024-09, Vol.51 (9), p.95104
• Main Authors: Priyanka, S, Chauhan, A, Mehta, M S, Bhuyan, M
• Format: Article
• Language: English
• Subjects: binding energy; bubble nuclei; magic number; quadrupole deformation; relativistic mean-field; single particle energy
• ISSN: 0954-3899; 1361-6471
• DOI: 10.1088/1361-6471/ad6c66

The ground state properties of Z = 125 and 126 nuclei are investigated, taking the isotopic series from the proton to neutron drip-lines. This analysis uses the relativistic mean-field approach with NL3 and the Relativistic-Hartree–Bogoliubov model with DD-ME2 parameterization. The bulk properties under examination include the binding energy per nucleon, the neutron separation energies, the differential variation of the separation energy, the quadrupole deformation parameter β 2 , and the single-particle energy. We observed the stability at N = 172 and 184 over the isotopic chain for both parameter sets. The quadrupole deformation parameter reveals a shape transition from prolate to spherical and back to prolate with mass number. No signature of a super- and/or hyper-deformed structure is found over the isotopic chain. Furthermore, the analysis is extended to examine the bubble structure, revealing a bubble/semi-bubble structure for a few neutron-rich isotopes.