SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 74: Poster
HK 74.4: Poster
Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG
Analysis of the bremsstrahlung contribution in electron-gamma coincidence experiments at the S-DALINAC — •Bastian Hesbacher, J. Birkhan, I. Brandherm, J. Isaak, I. Jurosevic, N. Pietralla, M. Singer, M. Spall, and G. Steinhilber — IKP, 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 - can not 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 35 times improved resolution [2]. The scattered electrons were registered with the QCLAM spectrometer. The γ-radiation was detected by 6 LaBr3:Ce detectors. The double differential cross section of the bremsstrahlung contribution is computed within PWBA and combined with GEANT4 simulations to model pure bremsstrahlung spectra. A subtraction of the bremsstrahlung background will be applied to the 96Ru (e,e′γ) data and allow for the extraction of ground-state γ-decays of excited states. Preliminary results on treating the bremsstrahlung contribution will be presented.
This work is supported by the Research Training Group GRK 2128 and the Hessian cluster project ELEMENTS.
[1] C. N. Papanicolas et al., Phys. Rev. Lett. 54 (1985).
[2] G. Steinhilber, Ph.D. thesis, TU Darmstadt (2022).