SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 74: Poster
HK 74.3: Poster
Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG
Towards the Establishment of an Electrofission Experiment at the S-DALINAC — •Gerhart Steinhilber1, Michaela Arnold1, Jonny Birkhan1, Michael Block2, Martha Liliana Cortès1, Tetyana Galatyk1, Pavlos Koseoglou1, Norbert Pietralla1, and Maximilian Spall1 — 1IKP, Technische Universität Darmstadt — 2GSI Helmholtzzentrum für Schwerionenforschung
To account for the observed abundances of heavy elements, the rapid-neutron capture process is essential [1]. It was first proposed more than six decades ago but is still not completely understood. The r-process is thought to occur in very neutron rich environments such as neutron star mergers, where the fission yields play an important role in determination of the final abundances. The fission yields depend on the excitation energy of the compound nucleus, which is not well studied. To increase our understanding of fission processes, a new setup for electron-induced fission is in development at the S-DALINAC electron accelerator at TU Darmstadt. Combining the established large acceptance QCLAM electron spectrometer which provides the excitation energy of the nucleus with fission fragment detector modules (FFDM) allows for a coincident measurement of fission fragments with an excellent mass resolution as a function of the excitation energy. The FFDMs which will be placed around the actinide target will provide precise timing information and the kinetic energy of the fission fragments. This poster will present the design of the setup.
This work is supported by the Hessian cluster project ELEMENTS.
[1] J. J. Cowan et al., Rev. Mod. Phys. 93, 015002 (2021).