Electric quadrupole moments of the 2+1 states in 100,102,104Cd

A. Ekström, J. Cederkäll, D. D. DiJulio, C. Fahlander, M. Hjorth-Jensen, A. Blazhev, B. Bruyneel, P. A. Butler, T. Davinson, J. Eberth, C. Fransen, K. Geibel, H. Hess, O. Ivanov, J. Iwanicki, O. Kester, J. Kownacki, U. Köster, B. A. Marsh, P. ReiterM. Scheck, B. Siebeck, S. Siem, I. Stefanescu, H. K. Toft, G. M. Tveten, J. Van de Walle, D. Voulot, N. Warr, D. Weisshaar, F. Wenander, K. Wrzosek, M. Zieliifmmode nelse ska

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25 Citations (Scopus)


Using the REX-ISOLDE facility at CERN the Coulomb excitation cross sections for the 0+gs→2+1 transition in the β-unstable isotopes Cd100,102,104 have been measured for the first time. Two different targets were used, which allows for the first extraction of the static electric quadrupole moments Q(2+1) in Cd102,104. In addition to the B(E2) values in Cd102,104, a first experimental limit for the B(E2) value in Cd100 is presented. The data was analyzed using the maximum likelihood method. The provided probability distributions impose a test for theoretical predictions of the static and dynamic moments. The data are interpreted within the shell-model using realistic matrix elements obtained from a G-matrix renormalized CD-Bonn interaction. In view of recent results for the light Sn isotopes the data are discussed in the context of a renormalization of the neutron effective charge. This study is the first to use the reorientation effect for post-accelerated short-lived radioactive isotopes to simultaneously determine the B(E2) and the Q(2+1) values.
Original languageEnglish
Article number054302
JournalPhysical Review C
Issue number5
Publication statusPublished - 1 Nov 2009
Externally publishedYes


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