SMuK 2023 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Nuclear Astrophysics I

HK 8.1: Gruppenbericht

Montag, 20. März 2023, 16:30–17:00, SCH/A419

Activation experiments for p-process nucleosynthesis at the University of Cologne — •Martin Müller, Felix Heim, Svenja Wilden, Pina Wüstenberg, and Andreas Zilges — University of Cologne, Institute for Nuclear Physics

For modeling the vast reaction networks involved in the production of heavy proton-rich isotopes in p-process nucleosynthesis, reaction cross sections for ten thousands of reactions are needed. It is impossible to measure all of these reactions in the laboratory because of which theoretical calculations of cross sections are imperative. To verify and adjust these calculations a comprehensive experimental database is needed [1]. A powerful method for extending the available database is the activation technique, which has been applied in various forms at the University of Cologne utilizing its 10 MV FN tandem and 6 MV HVE tandetron accelerators as well as the Cologne Clover Counting setup constisting of two clover-type HPGe detectors. Experiments combining the activation technique with in-beam measurements or the stacked-target method will be reported on, a method for utilizing two-step decays will be introduced, and results for the ^168,170,172Yb(α,n)^171,173,175Hf, ⁵⁵Mn(α, (2)n)^57,58Co, and ⁵⁸Fe(p, n)⁵⁸Co will be presented [2,3].
Supported by the DFG (ZI 510/8-2).

[1] M. Arnould and S. Goriely, Phys. Rep. 384, 1 (2003)

[2] L. Netterdon et al., Nucl. Phys. A 916, 149-167 (2013)

[3] M. Müller et al., submitted (2022)