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Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 61: Structure and Dynamics of Nuclei X

HK 61.4: Talk

Thursday, March 31, 2022, 15:00–15:15, HK-H6

Lifetime measurement of excited states in 120Te — •Franziskus v. Spee1, Alfred Dewald1, Claus Müller-Gatermann1,2, Marcel Beckers1, Felix Dunkel1, Lisa Kornwebel1, Casper-David Lakenbrink1, Jan Jolie1, Nigel Warr1, and Andrey Blazhev11Institut für Kernphysik, Cologne, Germany — 2Argonne National Laboratory, Illinois, USA

The nuclear structure of tellurium isotopes at Z=52 and the evolution of collectivity are of special interest due to the close proximity of the closed shell at Z=50 in the even-even neighbor Sn. A recoil distance Doppler-shift (RDDS) experiment was performed to investigate absolute transition probabilities in 120Te. Excited states in 120Te were populated using the 110Pd(13C,3n)120Te reaction at the FN-Tandem accelerator facility located at the IKP of Cologne. The γ−γ coincidence data were analysed with the differential decay-curve method (DDCM) eliminating problems related to feeding and absolute distances. Lifetimes of excited states in the yrast band up to the 8+ state were measured and the corresponding B(E2) values were calculated. In this contribution we will present the results and compare these with known data from Coulomb excitation experiments and IBM1-Calculations. This work was supported by the Deutsche Forschungsgemeinschaft (DFG) under contract numbers FR 3276/2-1 and DE 1516/5-1.

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