Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 52: Nukleare Astrophysik III
HK 52.1: Gruppenbericht
Donnerstag, 24. März 2011, 14:00–14:30, C-2
Experimental Methods for the Astrophysical p Process — •Anne Sauerwein, Janis Endres, Michael Elvers, Jens Hasper, Andreas Hennig, Lars Netterdon, and Andreas Zilges — Institut für Kernphysik, Universität zu Köln
The 10 MV ion tandem accelerator of the University of Cologne provides unique opportunities to improve the experimental situation for proton- and α-induced reactions relevant for the p process. This facility allows to perform both in-beam experiments using the highly-efficient HPGe detector array HORUS and activation experiments using a low-background counting setup which employs two clover-type HPGe detectors. In addition, a new 6 MV tandetron accelerator for Accelerator Mass Spectrometry (AMS) is available at the institute which can be used to detect long-lived radionuclides down to concentrations of 10−15 to 10−16 compared to stable isotopes [1].
The combination of this variety of experimental approaches gives access to a large number of astrophysically relevant reactions and allows detailed investigations of some key reactions within the p-process network [2,3].
In this contribution we will present first results of recent measurements and report on experiments planned in the near future.
Supported by the DFG (ZI 510/5-1 and ME 1169/19-1), by the BMBF under contract 06 KY 9136, by the University of Cologne and by the Bonn-Cologne Graduate School of Physics and Astronomy.
[1] A. Dewald et al., Nuclear Physics News 18 (2008) 26.
[2] W. Rapp et al., Astrophysical Journal 653 (2006) 474.
[3] T. Rauscher, Physical Review C 73 (2006) 01580.