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HK: Fachverband Physik der Hadronen und Kerne

HK 70: Structure and Dynamics of Nuclei XV

HK 70.4: Talk

Thursday, March 23, 2023, 16:45–17:00, SCH/A215

Lifetime measurement of low-lying states in ⁹²Mo via γ-γ fast-timing spectroscopy — •Mario Ley¹, Lukas Knafla¹, Andreas Harter¹, Arwin Esmaylzadeh¹, Jan Jolie¹, and Piet Van Isacker² — ¹Institut für Kernphysik, Universität zu Köln — ²Grand Accélérateur National d’Ions Lourds, Caen

Lifetimes of the first excited states in ⁹²Mo were measured using the digital γ-γ fast-timing technique with a detector array consisting of LaBr₃(Ce) and HPGe detectors. States were populated in a ⁹⁰Zr(α,2nγ)⁹²Mo reaction using the FN-Tandem accelerator of the institute for nuclear physics at the university of Cologne. The symmetrised centroid shift method [1], which is suitable for the determination of lifetimes in the pico- to nanosecond regime, was used to determine the lifetimes. The experimental results are used in a semiempirical approach which uses a single shell (1g_9/2) orbit to predict the B(E2) values in the N = 50 isotones from ⁹³Tc up to ⁹⁸Cd.

Work supported by DFG grant JO391/18.1

[1] J.-M. Régis et al., Nucl. Instrum. Methods Phys. Res. A 897 (2018)