logo Master en Física Nuclear y de Partículas y sus aplicaciones
Astrofísica Nuclear 		 curso
2014/2015
 
 Topic 15: The 2H(α,γ)6Li Cross Section at Big Bang Energies and the Primordial Lithium Problem

             Recent observations of 6 Li in metal poor stars suggest a large production of this isotope during big bang nucleosynthesis (BBN). In standard
             BBN calculations, the 2H(α,γ)6Li reaction dominates 6Li production. This reaction has never been measured until now inside the BBN
             energy region because its cross section drops exponentially at low energy and because the electric dipole transition is strongly suppressed for
             the isoscalar particles 2H and α at energies below the Coulomb barrier.

 




            Guideline

            1. Motivation: stelar scenarios, role of the reaction in the Big-Bang nucleosynthesis, previous attemps to investigate this reaction.

             2. Description of the experiment: accelerator, experimental setup.

             3. Discussion of the results and implications in observed abundances.
 

            Bibliography

             - M. Anders et al., Phys. Rev. Lett. 113, 042501 (2014)