HAL : hal-00001364, version 2

arXiv : nucl-th/0403080

Fiche détaillée

Récupérer au format BibTeX - EndNote - TEI - RefWorks -

Versions disponibles :

v1 (26-03-2004)

v2 (29-03-2004)

The N=28 shell closure; from N=Z to the neutron drip line

Etienne Caurier1, Frédéric Nowacki1, Alfredo Poves2

(29/03/2004)

The evolution of the N=28 neutron shell closure is studied in the N=28 isotones from neutron drip line's $^{40}$Mg to N=Z doubly magic $^{56}$Ni. It is found that the N=28 closure vanishes at Z=12 in favor of a deformed ground state. For Z=14 and Z=16 closed shell and intruder configurations are almost degenerate, leading to highly mixed ground states and to very low lying excited 0$^+$ states. For Z$>$20 the intruder states are always above the closed shell ground states. We examine their structure and their possible existence as collective yrare bands of well defined particle-hole character.

1 :	IReS - Institut de Recherches Subatomiques
2 :	UAM - Departamento de Fisica Teorica

Domaine

:

Physique/Physique Nucléaire Théorique

hal-00001364, version 2

http://hal.archives-ouvertes.fr/hal-00001364

oai:hal.archives-ouvertes.fr:hal-00001364

Contributeur : Frédéric Nowacki <>

Soumis le : Lundi 29 Mars 2004, 11:51:06

Dernière modification le : Lundi 29 Mars 2004, 11:56:18