Abstract
The shell corrections and shell gaps in nuclei are systematically studied with the latest Weizsäcker-Skyrme (WS4) mass model. We find that most of asymmetric nuclei with (sub)shell closures locate along the shell stability line (SSL), , which might be due to a strong correlation between neutrons and protons near the Fermi surface. The double magicity of nuclei and is predicted according to the corresponding shell gaps, shell corrections, and nuclear deformations. The unmeasured superheavy nuclei, and , with relatively large shell gaps and shell corrections, also locate along the SSL, whereas the traditional magic nucleus evidently deviates from the line. The -decay energies of superheavy nuclei with are simultaneously investigated by using the WS4 model together with the radial basis function corrections. For superheavy nuclei with large shell corrections, the smallest -decay energy for elements , 117, and 118 in their isotope chains locates at rather than 184.
- Received 6 October 2015
- Revised 6 December 2015
DOI:https://doi.org/10.1103/PhysRevC.93.014302
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