Электронный каталог

Статья

Seif, W.M.
Shell-Driven Similarities in Structure and Decay Characteristics Across N=50,82,126 and 184 Isotones / W.M.Seif, A.Adel. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 3. – P. 034304. – URL: https://doi.org/10.1103/yft9-22r3.

We performed a systematic analysis of ground-state properties for isotones of neutron shell closures. Using the Hartree-Fock-Bogoliubov theory with different energy density Skyrme functionals, we calculated structure properties, obtaining consistent agreement with available experimental data. The density-dependent cluster model with folding potential, considering nuclear deformations, is used to predict 𝛼-decay half-lives for isotones leading to 𝑁=184 daughter nuclei. A clear, shell-driven pattern is evident in the evolving properties of isotones, established by data for 𝑁=50, 82, and 126, and extending to theoretical estimates for the unobserved 𝑁=184 isotones. While the binding energy weakens and peaks at higher isospin asymmetry for heavier neutron shell closures, two-proton and two-neutron separation energies follow distinct linear trends dictated by the shell structure. Furthermore, charge radii evolve systematically, with neutron-skin thickness increasing with isospin-asymmetry but decreasing in magnitude for heavier shells. The shell-driven recurrent patterns of 𝛼-decay energy and half-life demonstrate a clear dependence on the number of protons outside a closed proton shell core. The consistent patterns observed in this study indicate that the most promising region for synthesizing 𝑁=184 isotones lies between 𝑍=112 and 𝑍=120. A key challenge for lower-𝑍 candidates in this range is their higher isospin asymmetry, which contradicts the trend of a narrowing stability window for heavier nuclei.



ОИЯИ = ОИЯИ (JINR)2026