Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 52: Nukleare Astrophysik III
HK 52.3: Vortrag
Donnerstag, 24. März 2011, 14:45–15:00, C-2
Cross section measurements of 103Rh(p,γ)104Pd with the Karlsruhe 4πBaF2 detector — •Mario Weigand1,2, Stephan Walter3, Franz Käppeler3, Ralf Plag1,2, and Rene Reifarth1,2 — 1GSI Helmholtzzentrum für Schwerionenforschung — 2J.W. Goethe Universität, Frankfurt a.M., 60438, Germany — 3Karlsruhe Institute of Technology (KIT), Campus Nord, Institut für Kernphysik, Postfach 3640, 76021 Karlsruhe, Germany
The cosmic abundance distribution of elements and isotopes is related to the reaction rates of the different synthesis processes. Most of the elements heavier than iron have been and still are synthesized in neutron-induced in stars of different stages. However, some isotopes are primarily formed in the so-called p-process because they are shielded from the much more effective neutron-induced reactions. The qualitative description of the p-process requires large reaction networks. The most important components here are the proton-, alpha- and gamma-induced reactions and the associated β+-decays.
At the Karlsruhe Institute of Technology (KIT) 103Rh(p,γ) capture events have been observed with the Karlsruhe 4π-BaF2-detector, which consists of up to 42 spherically arranged BaF2-crystals. The protons were accelerated with a pulsed 3.7 MV Van de Graaff accelerator to an energy of 3 MeV and fired on a metallic Rhodium target.
An overview of the experimental setup and the progresses that have been made with the data processing will be presented. The experiment was supported by the HGF young investigator project VH-NG-327.