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HK: Fachverband Physik der Hadronen und Kerne

HK 29: Nuclear Astrophysics 2

HK 29.4: Talk

Tuesday, March 24, 2015, 18:00–18:15, K/HS2

S factor of ¹⁴N(p,γ)¹⁵O at 0.4 - 1.4 MeV — •Louis Wagner^1,2, Shavkat Akhmadaliev¹, Michael Anders^1,2, Daniel Bemmerer¹, Zoltan Elekes¹, Stefan Gohl^1,2, Arnd Junghans¹, Michele Marta³, Frans Munnik¹, Tobias Reinhardt², Stefan Reinicke^1,2, Marko Röder^1,2, Konrad Schmidt^1,2, Ronald Schwengner¹, Martin Serfling^1,2, Tamas Szücs¹, Marcell Takacs^1,2, 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).