Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Nukleare Astrophysik
HK 33.7: Vortrag
Dienstag, 5. März 2013, 15:45–16:00, HSZ-403
Big Bang nucleosynthesis and the results of the 2H(α,γ)6Li experiment at LUNA — •Michael Anders — Helmholtz-Zentrum Dresden-Rossendorf — TU Dresden
Observations of the 6Li abundance in very metal-poor stars, if confirmed, show a level of 6Li that is several orders of magnitude larger than the production of this nuclide in standard Big Bang nucleosynthesis. The 2H(α,γ)6Li nuclear reaction is believed to dominate 6Li production in the Big Bang, but there are no directly measured data at relevant energies yet. The reaction has been studied at the LUNA 0.4 MV accelerator, deep underground in the Gran Sasso laboratory in Italy, using an intensive He+ beam and a windowless deuterium gas target. The conclusions from the final data analysis of the experiment will be presented. – Supported in part by DFG (BE 4100/2-1).