Regular Article - Theoretical Physics
Probing the robustness of shell closure via the decay systematics
School of Physics, Xi’an Jiaotong University, 710049, Xi’an, People’s Republic of China
2 School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, People’s Republic of China
Accepted: 8 August 2022
Published online: 2 September 2022
In the present work, the decay half-lives for even-even polonium–uranium nuclei, including three isotopes U Zhang et al. (in Phys Rev Lett 126:152502, 2021), are studied within the generalized liquid drop model with the total decay energy-dependent -particle preformation factors. The -particle preformation factors extracted from the experimental decay half-life are also investigated. The calculated decay half-lives can reproduce the experimental data within a factor of 1.74. The systematics of decay half-lives and -particle preformation factors suggest that the shell effect of closed-shell also exists in the uranium isotopes, although its robustness is weakening as the polonium isotope evolves towards the more proton-rich uranium isotope.
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