Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 29: Nuclear Astrophysics 2

HK 29.5: Vortrag

Dienstag, 24. März 2015, 18:15–18:30, K/HS2

S-factor measurement of ¹²C(p,γ)¹³N in inverse kinematics — •Klaus Stöckel^1,2, Tobias P. Reinhardt², Shavkat Akhmadaliev¹, Daniel Bemmerer¹, Stefan Gohl^1,2, Stefan Reinicke^1,2, Konrad Schmidt^1,2, Martin Serfling^1,2, Tamás Szücs¹, Marcell P. Takács^1,2, Louis Wagner^1,2, and Kai Zuber² — ¹Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — ²Technische Universität Dresden, Dresden, Germany

The ¹²C(p,γ)¹³N is the second slowest reaction in the CNO cycle. Hence, it affects the reaction rate in the outer parts of the solar core, where due to the lower temperature the CNO cycle has not yet reached its equilibrium. The last comprehensive study of the ¹²C(p,γ)¹³N reaction dates back to the 1970s. The reaction has been studied using a ¹²C beam at the Dresden 3 MV Tandetron, solid hydrogen targets and a lead shielded 60 % HPGe detector. Hydrogen depth profiling with a ¹⁵N beam was used for the determination of the target characteristics. The excitation function has been determined down to 152 keV. — Supported by BMBF (05P120DNUG) and by the Helmholtz Association through the Nuclear Astrophysics Virtual Institute NAVI, (HGF VH-VI-417).