München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 49: Structure and Dynamics of Nuclei IX

HK 49.7: Talk

Thursday, March 21, 2019, 15:45–16:00, HS 14

Lifetime measurement on ¹⁷⁷Hf using the EXILL&FATIMA spectrometer — •Lukas Knafla¹, Jean-Marc Régis¹, Jan Jolie¹, Ulli Köster², Gabriela Thiamova³, and Petr Alexa⁴ for the EXILL-FATIMA collaboration — ¹Institut für Kernphysik, Universität zu Köln — ²Institut Laue-Langevin, Grenoble — ³LPSC Grenoble — ⁴VŠB-Technical University of Ostrava

Lifetimes of high spin states in the odd-A nucleus ¹⁷⁷Hf were measured using the EXILL&FATIMA spectrometer equiped with eight HPGe-clover detectors and 16 fast-timing LaBr₃(Ce) detectors [1]. For the determination of lifetimes in the pico- to nanosecond regime, the well established Generalized Centroid Difference (GCD) method was used [2]. Lifetimes of ten states were measured including seven lifetimes that were determined for the first time. From these lifetimes reduced transition probabilities were extracted and compared to particle-rotor model (PRM) calculations and quasiparticle-phonon model (QPM) calculations.
[1] J.-M. Régis et al., Nucl. Instrum. Methods Phys. Res. A 763 (2014)
[2] J.-M. Régis et al., Nucl. Instrum. Methods Phys. Res. A 726 (2013)