Shape coexistence at N=20 and N=28 : study of 0+2 states in $^{34}$Si and $^{44}$S - IN2P3 - Institut national de physique nucléaire et de physique des particules Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

Shape coexistence at N=20 and N=28 : study of 0+2 states in $^{34}$Si and $^{44}$S

F. Rotaru
  • Fonction : Auteur
F. Negoita
  • Fonction : Auteur
C. Borcea
  • Fonction : Auteur
R. Borcea
  • Fonction : Auteur
A. Buta
  • Fonction : Auteur
S. Calinescu
C. Petrone
  • Fonction : Auteur
M. Stanoiu
  • Fonction : Auteur
J. Mrazek
  • Fonction : Auteur
S. Lukyanov
  • Fonction : Auteur
Y. Penionzhkevich
  • Fonction : Auteur
C. Stodel
J. M. Daugas
  • Fonction : Auteur
L. Gaudefroy
  • Fonction : Auteur
Zs. Dombrádi
  • Fonction : Auteur
D. Sohler
A. Poves
I. Stefan
N.L. Achouri
B. Bastin

Résumé

It is well known that the nuclear shell structure changes for the most exotic nuclei. One of the consequences of this phenomenon is the modification of the "classical" magic numbers, as experimentally observed at N = 20 and N = 28. Nevertheless, the mechanisms responsible for such changes are still under discussion and more experimental information is needed to better constrain the theoretical models. In these proceedings, we report on the discovery and the experimental study by precise spectroscopy experiments of the 0+2 state in 34Si and 44S. The 34Si is located between the magic spherical 36S and the deformed 32Mg, member of the so-called island of inversion, whereas 44S is located between the magic spherical 48Ca and the deformed 42Si. Therefore, the structure of these nuclei, and in particular the phenomenon of shape coexistence, is of crucial importance to understand how the intruder configurations progressively dominate the ground state structure of the most exotic nuclei at both N = 20 and N = 28.

Dates et versions

in2p3-01148934 , version 1 (05-05-2015)

Identifiants

Citer

S. Grévy, F. Rotaru, F. Negoita, C. Borcea, R. Borcea, et al.. Shape coexistence at N=20 and N=28 : study of 0+2 states in $^{34}$Si and $^{44}$S . Frontiers in Gamma Ray Spectroscopy 2012 (FIG-12), Mar 2012, New Delhi, India. pp.167-172, ⟨10.1063/1.4893271⟩. ⟨in2p3-01148934⟩
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