Cross-Shell Excitation in F and Ne Isotopes around <i>N</i> = 20
Within the framework of the configuration–interaction shell model, the present work applies three effective interactions to investigate the effects of the cross-shell excitation on F and Ne isotopes around <i>N</i> = 20, which are significantly proton–neutron asymmetric, and have differe...
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| Autores principales: | , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/e795d94f234547a6a54bcfcc80d208bc |
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| Sumario: | Within the framework of the configuration–interaction shell model, the present work applies three effective interactions to investigate the effects of the cross-shell excitation on F and Ne isotopes around <i>N</i> = 20, which are significantly proton–neutron asymmetric, and have different properties compared with the proton–neutron symmetric nuclei. It is shown that cross-shell excitation is necessary in order to reproduce separation energies, neutron drip lines, and low-energy levels of these isotopes. Furthermore, the cross-shell excitation of (0–5)<i>ħω</i> is suggested to be important in the description of <sup>29</sup>F and <sup>30</sup>Ne. However, the three interactions are insufficient in describing the bound structure of <sup>29,31</sup>Ne, and provide inconsistent shell structures and evolutions in the target nuclei. Their cross-shell interactions are suggested to be improved. |
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