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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Nukleare Astrophysik

HK 40.6: Vortrag

Donnerstag, 20. März 2014, 15:45–16:00, HZ 5

First results of the ⁹²Mo(p,γ)⁹³Tc reaction performed at the HORUS spectrometer in Cologne — •Jan Mayer¹, Martin Baldenhofer¹, Lars Netterdon¹, Anne Sauerwein², Philipp Scholz¹, and Andreas Zilges¹ — ¹Institute for Nuclear Physics, University of Cologne — ²Institute for Applied Physics, Goethe University Frankfurt

The γ process is an important nucleosynthesis mechanism to explain the abundances of the majority of p nuclei, which are bypassed by neutron capture processes. To improve the accuracy of reaction rates predicted by theoretical models, precise experimental data is required. In-beam experiments with HPGe detectors aim at measuring total and partial reaction cross sections for stable as well as unstable products and thus either allow the direct calculation of stellar rates or constrain nuclear physics input parameters. Located at the 10 MV tandem accelerator of the University of Cologne, the high-efficiency HPGe γ-ray spectrometer HORUS was used to measure the ⁹²Mo(p,γ)⁹³Tc reaction at proton energies between 3.7 and 5 MeV. In this talk, first results on total and partial cross sections will be presented.

Partly supported by the DFG (Zi 510/5-1).