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Dresden 2013 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Struktur und Dynamik von Kernen

HK 32.6: Talk

Tuesday, March 5, 2013, 15:30–15:45, HSZ-401

Quadrupole collectivity in the Cd isotopic chain investigated with Coulomb excitation — •Sabine Bönig, Thorsten Kröll, and Marcus Scheck — Technische Universität Darmstadt

The cadmium isotopic chain with a proton number of Z=48 is one of the most interesting in nuclear structure physics due to the proximity to the proton shell closure at Z=50. Performed Coulomb excitation experiments on 122−126Cd exhibit high excitation strengths for the 0gs+→ 21+ transition. Shell model calculations are not able to reproduce the experimentally found values although the shell closure is near. However, Beyond-Mean-Field calculations agree with the experimental results, taking a prolate deformation into account. In this contribution, the latest results on the investigation of the B(E2, 0+→ 21+) value of 128Cd via Coulomb excitation with MINIBALL at REX-ISOLDE will be presented. We will discuss the experimentally found transition strength considering a non-vanishing quadrupole moment and place it in the overall picture of the behaviour of the B(E2, 0+→ 21+) values of this isotopic chain. This project is supported by BMBF (No. 06 DA 9036I and No. 05 P12 RDCIA), HIC for FAIR and EU through ENSAR (No. 262010).

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