Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 52: Structure and Dynamics of Nuclei X
HK 52.5: Vortrag
Mittwoch, 13. März 2024, 18:30–18:45, HBR 19: C 5a
Preparations and first results using fast-timing lifetime analysis within the nu-Ball2 fission campaign — •Julia Fischer1, Andrey Blazhev1, Corentin Hiver2, Jan Jolie1, Andi Messingschlager3, Sorin Pascu4, Martin von Tresckow3, Nigel Warr1, and Jonathan Wilson2 for the nu-Ball2 N-SI-120 collaboration — 1IKP Cologne — 2IJCLab Orsay — 3TU Darmstadt — 4U Surrey
Nuclei beyond the band of stability are crucial to our understanding of the atomic nucleus and nuclear forces. Over the years, neutron-rich krypton isotopes have been studied as part of various campaigns [1,2]. Recently, high-resolution and fast-timing measurements were performed at the IJCLab Orsay as part of the nu-Ball2 fission campaign. The novel hybrid γ-spectrometer nu-Ball2 consists of HPGe and LaBr3(Ce) detectors which provide excellent energy and timing information, respectively. The nuclei of interest were produced with a fast-neutron-induced fission reaction 238U(n,f). Before new results can be reliably extracted, the time-walk of the LaBr3(Ce) detectors had to calibrated and the performance of the setup to be validated using the known lifetimes of excited states. The calibration and validation of the nu-Ball2 fast-timing analysis, as well as some preliminary results will be presented. *Supported by BMBF under Verbundprojekt 05P2021 (ErUM-FSP T07) grant 05P21PKFN1.
[1] R.-B. Gerst et al., PRC 102, 064323 (2020).
[2] R.-B. Gerst et al., PRC 105, 024302 (2022).
Keywords: gamma-ray spectroscopy; fast-timing; LaBr detectors; fission-reaction