Superheavy magic structures in the relativistic Hartree-Fock-Bogoliubov approach
| Autor: | Li, Jia Jie, Long, Wen Hui, Margueron, Jerome, Van Giai, Nguyen |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Physics Letters B 732(2014) 169-173 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1016/j.physletb.2014.03.031 |
| Popis: | We have explored the occurrence of the spherical shell closures for superheavy nuclei in the framework of the relativistic Hartree-Fock-Bogoliubov (RHFB) theory. Shell effects are characterized in terms of two-nucleon gaps $\delta_{2n(p)}$. Although the results depend slightly on the effective Lagrangians used, the general set of magic numbers beyond $^{208}$Pb are predicted to be $Z = 120$, $138$ for protons and $N = 172$, 184, 228 and 258 for neutrons, respectively. Specifically the RHFB calculations favor the nuclide $^{304}$120 as the next spherical doubly magic one beyond $^{208}$Pb. Shell effects are sensitive to various terms of the mean-field, such as the spin-orbit coupling, the scalar and effective masses. Comment: 3 figures, 1 table, and 5 pages |
| Databáze: | arXiv |
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