Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 61: Nukleare Astrophysik
HK 61.2: Vortrag
Freitag, 21. März 2014, 14:30–14:45, HZ 4
Measurement of the 20N(γ,n)19N cross section by Coulomb dissociation — •Marko Röder1,2, Daniel Bemmerer1, Thomas E. Cowan1,2, Zoltán Elekes1,3, Tobias Reinhardt2,1, Andreas Wagner1, and Kai Zuber2 for the R3B collaboration — 1Helmholtz-Zentrum Dresden-Rossendorf (HZDR) — 2Institut für Kern- und Teilchenphysik, Technische Universität Dresden — 3MTA Atomki, Debrecen, Hungary
In the astrophysical r-process, many neutron-rich nuclei are involved. The reactions on these exotic nuclei can only be studied with radioactive ion beams. One example is the 19N(n,γ)20N reaction that is included in a neutrino-driven wind scenario. Using 20N as a beam, this reaction was studied at the GSI Fragment Separator (FRS) in inverse kinematics via Coulomb dissociation in the S393-experiment. The relativistic neutrons were observed by the LAND-detector. I will give final results of the analysis, including the cross section of the 20N(γ,n)19N reaction, the γ-ray spectrum of excited 19N from this reaction, and also some data on the 21N(γ,n)20N reaction.
— Supported by GSI F&E (DR-ZUBE), NupNET NEDENSAA (05 P09 CRFN5) and Plattform für Detektortechnologie und -systeme.