Evolution of single-particle structure of silicon isotopes
| Autor: | Bespalova, O., Fedorov, N., Klimochkina, A., Markova, M., Spasskaya, T., Tretyakova, T. |
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| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Eur. Phys. J. A (2018) 54: 2 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epja/i2018-12449-x |
| Popis: | New data on proton and neutron single-particle energies $E_{nlj}$ of Si isotopes with neutron number $N$ from 12 to 28 as well as occupation probabilities $N_{nlj}$ of single particle states of stable isotopes $^{28,30}$Si near the Fermi energy were obtained by the joint evaluation of the stripping and pick-up reaction data and excited state decay schemes of neighboring nuclei. The evaluated data indicate following features of single-particle structure evolution: persistence of $Z = 14$ subshell closure with $N$ increase, the new magicity of the number $N = 16$, and the conservation of the magic properties of the number $N = 20$ in Si isotopic chain. The features were described by the dispersive optical model. The calculation also predicts the weakening of $N = 28$ shell closure and demonstrates evolution of bubble-like structure of the proton density distributions in neutron-rich Si isotopes. Comment: 14 pages, 12 figures, accepted for publication in the European Physical Journal A - "Hadrons and Nuclei" |
| Databáze: | arXiv |
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