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HK: Fachverband Physik der Hadronen und Kerne
HK 5: Structure and Dynamics of Nuclei I
HK 5.4: Talk
Monday, March 11, 2024, 17:45–18:00, HBR 19: C 5a
Nuclear structure studies in 96Ru using electron-gamma coincidence reactions at the S-DALINAC — •Bastian Hesbacher, Jonny Birkhan, Isabelle Brandherm, Johann Isaak, Igor Jurosevic, Norbert Pietralla, Maxim Singer, Maximilian Spall, and Gerhart Steinhilber — Institut für Kernphysik, Technische Universität Darmstadt
The all-electromagnetic (e,e′γ) reaction had first been used for nuclear structure measurements in the 1980s [1]. Since then very few experiments were based on this reaction. One of the challenges of this measurement technique lies in the coincident bremsstrahlung, which - apart from the angular distribution - cannot be distinguished from the γ-radiation of decaying nuclei after excitation by inelastic electron scattering. In 2021 a successful 96Ru(e,e′γ) measurement was performed at the S-DALINAC with coincidence-resolution improved by two orders of magnitude [2]. The scattered electrons were registered with the QCLAM spectrometer. The γ-radiation was detected by 6 LaBr3:Ce detectors. Two methods for the subtraction of the bremsstrahlung background will be applied to the 96Ru(e,e′γ) data allowing for the extraction of ground-state γ-decays of excited states. Preliminary results on γ-decays of 96Ru will be presented.
This work is supported by the Collaborative Research Center 1245.
[1] C. N. Papanicolas et al., Phys. Rev. Lett. 54, 26 (1985).
[2] G. Steinhilber, Doctoral thesis, TU Darmstadt (2023).
Keywords: Electron scattering; Coincidence; Ruthenium; Bremsstrahlung; S-DALINAC