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

Summary, in English

Using the REX-ISOLDE facility at CERN the Coulomb excitation cross sections for the 0(gs)(+)-> 2(1)(+) transition in the beta-unstable isotopes Cd-100,Cd-102,Cd-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 Cd-102,Cd-104. In addition to the B(E2) values in Cd-102,Cd-104, a first experimental limit for the B(E2) value in Cd-100 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.

• Author: Andreas Ekström; Joakim Cederkäll; Douglas DiJulio; Claes 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. Koester; B. A. Marsh; P. Reiter; M. 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. Zielinska
• Department/s: Nuclear physics
• Publishing year: 2009
• Language: English
• Publication/Series: Physical Review C (Nuclear Physics)
• Volume: 80
• Issue: 5
• Links: http://dx.doi.org/10.1103/PhysRevC.80.054302
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0556-2813