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HK: Fachverband Physik der Hadronen und Kerne
HK 30: Nuclear Astrophysics III
HK 30.2: Talk
Wednesday, March 22, 2023, 14:30–14:45, SCH/A419
The 58Fe(p,n)58Co activation experiment at the University of Cologne — •Pina Wüstenberg, Felix Heim, Martin Müller, Svenja Wilden, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics
The γ-process describes a large network of reactions that leads to the synthesis of proton-rich nuclei, the p nuclei. Not all of these reactions can be measured in the laboratory, therefore theoretical predictions are needed. These models can be tested and improved by comparing them to experimental data.
This contribution deals with the determination of cross sections of the 58 Fe(p,n)58Co reaction. The cross section of (p,n) reactions is mainly sensitive to the optical model potential that describes the interaction between a proton and a nucleus. For this purpose, highly-enriched 58 Fe targets were irradiated with protons with seven different energies in the energy range between 3.3 MeV and 5 MeV. The proton beam was delivered by the 10 MV FN Tandem accelerator of the Institute for Nuclear Physics at the University of Cologne. The total cross sections were derived by analyzing the emitted γ-rays during the decay of 58 Fe using a dedicated counting setup. The γ-ray spectra were recorded using two clover-type HPGe detectors in a face-to-face geometry. The resulting cross sections were compared to predictions from theoretical models.
Supported by the DFG (ZI 510/8-2)