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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Structure and Dynamics of Nuclei X

HK 52.6: Vortrag

Mittwoch, 13. März 2024, 18:45–19:00, HBR 19: C 5a

Lifetime measurement of excited states in ¹⁵⁰Gd — •Felix Dunkel, Arwin Esmaylzadeh, Christoph Fransen, Jan Jolie, Casper-David Lakenbrink, Richard Novak, and Franziskus Spee — Institut für Kernphysik, Köln, Deutschland

To investigate the evolution of deformation along the Z = 64 (Gd) sub-shell closure between N = 82 and N = 90 lifetimes of low-lying excited states in ¹⁵⁰Gd were measured utilizing the Recoil Distance Doppler-Shift (RDDS) method. The excited states were populated using the ¹⁴²Ce(¹²C,4n)¹⁵⁰Gd fusion-evaporation reaction at the FN Tandem accelerator at the IKP Cologne. Measured γ-γ coincidence data were analyzed with the differential decay-curve method (DDCM). It was possible to determine the lifetimes of the 2₁⁺,4₁⁺,3₁⁻ states. In this contribution we will present the results, discuss the evolution of collectivity along the isotopic chain and compare the results with theoretical calculations. Work supported by BMBF under grant 05P21PKFN1.

Keywords: Plunger; Lifetimes; RDDS; DDCM; 150Gd