EPJ Web of Conferences (Mar 2014)

Quadrupole collectivity in neutron-rich Cd isotopes

  • Bönig S.,
  • Ilieva S.,
  • Kröll T.,
  • Scheck M.,
  • Balabanski D.,
  • Bauer C.,
  • Blazhev A.,
  • Bloch T.,
  • Deleanu D.,
  • Diriken J.,
  • Fernier P.,
  • Gernhäuser R.,
  • Hadyńska-Kęk K.,
  • Jungclaus A.,
  • Lutter R.,
  • Negret A.,
  • Nowak K.,
  • Orlandi R.,
  • Pakarinen J.,
  • Rainovski G.,
  • Rodríguez T.R.,
  • Schmid M. von,
  • Seidlitz M.,
  • Siebeck B.,
  • Simpson G.S.,
  • Sisón A. Illana,
  • Stegmann R.,
  • Stora T.,
  • Thirolf P.G.,
  • Thürauf M.,
  • Vermeulen M.J.,
  • Voulot D.,
  • Warr N.,
  • Wenander F.,
  • Witte H. De

DOI
https://doi.org/10.1051/epjconf/20146602012
Journal volume & issue
Vol. 66
p. 02012

Abstract

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The investigation of the excitation energies of the 21+ –states in the neutron-rich Cd isotopes shows an irregular behaviour when approaching the neutron shell-closure at N = 82. The energy of the 21+–state in 128Cd is lower than the one in 126Cd. The transition strength B(E2, 0gs+ → 21+) in the even isotopes 122−128Cd was measured in Coulomb excitation experiments with the high-purity germanium detector array MINIBALL at REXISOLDE (CERN). The values for 122,124Cd coincide with beyond-mean-field calculations with a resultant prolate deformation, whereas 126,128Cd are better described by shell-model calculations.