Shape isomerism and shape coexistence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighboring T=1 multiplets - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2012

Shape isomerism and shape coexistence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighboring T=1 multiplets

G. de Angelis
  • Function : Author
K. T. Wiedemann
  • Function : Author
T. Martinez
R. Orlandi
  • Function : Author
A. Petrovici
  • Function : Author
E. Sahin
  • Function : Author
J. J. Valiente-Dob'On
  • Function : Author
D. Tonev
  • Function : Author
S. Lunardi
  • Function : Author
B. S. Nara Singh
  • Function : Author
R. Wadsworth
  • Function : Author
A. Gadea
  • Function : Author
K. Kaneko
P. G. Bizzeti
  • Function : Author
A. M. Bizzeti-Sona
  • Function : Author
Bertram Blank
A. Bracco
  • Function : Author
M. P. Carpenter
  • Function : Author
C. J. Chiara
  • Function : Author
E. Farnea
  • Function : Author
A. Gottardo
  • Function : Author
J. P. Greene
  • Function : Author
S. M. Lenzi
  • Function : Author
S. Leoni
C. J. Lister
  • Function : Author
D. Mengoni
  • Function : Author
D. R. Napoli
  • Function : Author
O. L. Pechenaya
  • Function : Author
F. Recchia
  • Function : Author
W. Reviol
  • Function : Author
D. G. Sarantites
  • Function : Author
D. Seweryniak
  • Function : Author
C.A. Ur
  • Function : Author
S. Zhu

Abstract

Excited states of the N=Z=33 nucleus 66As have been populated in a fusion-evaporation reaction and studied using γ-ray spectroscopic techniques. Special emphasis was put into the search for candidates for the T=1 states. A new 3+ isomer has been observed with a lifetime of 1.1(3) ns. This is believed to be the predicted oblate shape isomer. The excited levels are discussed in terms of the shell model and of the complex excited Vampir approaches. Coulomb energy differences are determined from the comparison of the T=1 states with their analog partners. The unusual behavior of the Coulomb energy differences in the A=70 mass region is explained through different shape components (oblate and prolate) within the members of the same isospin multiplets. This breaking of the isospin symmetry is attributed to the correlations induced by the Coulomb interaction.
Not file

Dates and versions

in2p3-00687037 , version 1 (12-04-2012)

Identifiers

Cite

G. de Angelis, K. T. Wiedemann, T. Martinez, R. Orlandi, A. Petrovici, et al.. Shape isomerism and shape coexistence effects on the Coulomb energy differences in the N=Z nucleus 66As and neighboring T=1 multiplets. Physical Review C, 2012, 85, pp.034320. ⟨10.1103/PhysRevC.85.034320⟩. ⟨in2p3-00687037⟩

Collections

IN2P3 CENBG CNRS
23 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More