Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 29: Nuclear Astrophysics 2
HK 29.4: Vortrag
Dienstag, 24. März 2015, 18:00–18:15, K/HS2
S factor of 14N(p,γ)15O at 0.4 - 1.4 MeV — •Louis Wagner1,2, Shavkat Akhmadaliev1, Michael Anders1,2, Daniel Bemmerer1, Zoltan Elekes1, Stefan Gohl1,2, Arnd Junghans1, Michele Marta3, Frans Munnik1, Tobias Reinhardt2, Stefan Reinicke1,2, Marko Röder1,2, Konrad Schmidt1,2, Ronald Schwengner1, Martin Serfling1,2, Tamas Szücs1, Marcell Takacs1,2, Andreas Wagner1, and Kai Zuber2 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2TU Dresden, Germany — 3GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
For solar model calculations precise knowledge of the relevant fusion cross sections is needed. In the solar core the rate of the CNO cycle is dominated by the bottleneck 14N(p,γ)15O reaction, because this is the slowest reaction of the cycle. A proton beam with energies of 0.4 - 1.4 MeV delivered by the 3 MV Tandetron of Helmholtz-Zentrum Dresden-Rossendorf was used to study the non-resonant cross section of 14N(p,γ)15O. The talk presents the characterisation of the used TiN targets with Elastic Recoil Detection Analysis (ERDA), new data for the S factor of 14N(p,γ)15O and a R-Matrix extraplolation for capture to the excited state at 6.79 MeV.
– Supported by the Helmholtz association through the Nuclear Astrophysics Virtual Institute (HGF VH-VI-417).