# Magicity of neutron-rich nuclei within relativistic self-consistent approaches

Abstract : The formation of new shell gaps in intermediate mass neutron-rich nuclei are investigated within the relativistic Hartree-Fock-Bogoliubov theory and the role of the Lorentz pseudo-vector and tensor interactions is analyzed. Based on the Foldy-Wouthuysen transformation, we discuss in detail the role played by the different terms of the Lorentz pseudo-vector and tensor interactions in the formation of the $N=16$, 32 and 34 shell gaps. The nuclei $^{24}$O, $^{52,54}$Ca and $^{48}$Si are predicted with a large shell gap and zero ($^{24}$O, $^{52}$Ca) or almost zero ($^{54}$Ca, $^{48}$Si) pairing gap, making them candidates for new magic numbers in exotic nuclei. We found from our analysis that the Lorentz pseudo-vector and tensor interactions induce very specific evolutions of single-particle energies, which could clearly sign their presence and reveal the need for relativistic approaches with exchange interactions.
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2016, 753, pp.97-102. 〈10.1016/j.physletb.2015.12.004〉

http://hal.in2p3.fr/in2p3-01184663
Contributeur : Sophie Heurteau <>
Soumis le : lundi 17 août 2015 - 13:26:26
Dernière modification le : jeudi 15 mars 2018 - 11:40:10

### Citation

Jia Jie Li, J. Margueron, Wen Hui Long, N. Van Giai. Magicity of neutron-rich nuclei within relativistic self-consistent approaches. Physics Letters B, Elsevier, 2016, 753, pp.97-102. 〈10.1016/j.physletb.2015.12.004〉. 〈in2p3-01184663〉

### Métriques

Consultations de la notice