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HK: Fachverband Physik der Hadronen und Kerne
HK 58: Nuclear Astrophysics II
HK 58.5: Vortrag
Freitag, 3. April 2020, 12:15–12:30, J-HS B
In-beam cross section measurements in the Mo-Ru region for p-process nucleosynthesis — •Martin Müller, Felix Heim, Jan Mayer, Philipp Scholz, and Andreas Zilges — Institute for Nuclear Physics, University of Cologne
In spite of many years of research, nucleosynthesis simulations are still not able to reproduce many p-nuclei abundances accurately [1]. Among the most extreme cases are the light Molybdenum and Ruthenium p-isotopes. The 93Nb(p,γ)94Mo reaction is one of the key reactions affecting the 94Mo abundance. Hence an in-beam experiment at the HORUS γ-spectrometer located at the University of Cologne [2] was performed. A second experiment measuring total cross sections of the 98Ru(α, γ)102Pd reaction was conducted at the RUBION facility of the Ruhr-Universität Bochum utilizing the 4π-summing technique [3]. Preliminary results for both measurements have been compared to Hauser-Feshbach statistical model calculations [4] in an attempt to further constrain its input parameters.
Supported by the DFG (ZI 510/8-1).
[1] M. Arnould and S. Goriely, Phys. Rep. 384, 1 (2003)
[2] L. Netterdon et al., Nucl. Instr. Meth. A 754, 94 (2014)
[3] A. Spyrou et al., Phys. Rev. C 76, 1 (2007)
[4] W. Hauser and H. Feshbach, Phys. Rev. 87, 366 (1952)