Bonn 2020 – wissenschaftliches Programm
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HK 45.5: Vortrag
Donnerstag, 2. April 2020, 15:15–15:30, J-HS E
Lifetime measurement of excited states in 120Te — •Franziskus von Spee, Alfred Dewald, Claus Müller-Gatermann, Christoph Fransen, Alina Goldkuhle, Marcel Beckers, and Casper Lakenbrink — Institut für Kernphysik, Köln, Deutschland
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.