Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Postersitzung

HK 36.23: Poster

Mittwoch, 17. März 2010, 14:00–16:00, HG Aula

(p,γ) reactions in the p-process Gamow window — •Mario Weigand1,2, Stephan Walter3, Franz Käppeler3, Ralf Plag1,2, and Rene Reifarth1,21GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany — 2J.W. Goethe Universität, Frankfurt a.M., 60438, Germany — 3Karlsruhe Institute of Technology (KIT), Campus Nord, Institut für Kernphysik, Postfach 3640, 76021 Karlsruhe, Germany

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.

First results from the measurements an overview of the experimental setup will be presented. The experiment was supported by the HGF young investigator project VH-NG-327.

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