Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Struktur und Dynamik von Kernen

HK 32.8: Talk

Wednesday, March 19, 2014, 18:30–18:45, HZ 5

Quadrupole Collectivity in neutron-rich Cd istotopes — •Sabine Bönig¹, Thorsten Kröll¹, Marcus Scheck^1,2, Stoyanka Ilieva¹, and Anna-Lena Hartig¹ for the IS477/IS524 collaboration — ¹Institut für Kernphysik, TU Darmstadt — ²University of West Scotland, United Kingdom

The neutron-rich cadmium nuclei with a proton number of Z=48 are some of the most interesting isotopes in nuclear structure physics due to the proximity to the proton and neutron shell closures at Z=50 and N=82 respectively. The transition strength B(E2, 0_gs⁺→ 2₁⁺) and quadrupole moment Q_s(2₁⁺) in the even neutron-rich isotopes ^122−128Cd was measured in Coulomb excitation experiments with MINIBALL at REX-ISOLDE (CERN). Results of these experiments will pursue the picture of the behaviour of the transition strength towards the neutron shell closure at N=82. A closer insight into the onset of collectivity and the roles played by different orbits can be obtained by the investigation of the odd isotopes. We started this program with the examination of ¹²³Cd where already discrepancies in the level scheme to the literature were evidenced. In this contribution the results of these investigations will be presented. This project is supported by BMBF (No. 06 DA 9036I and No. 05 P12 RDCIA), HIC for FAIR, EU through EURONS (No. 506065) and ENSAR (No. 262010).