Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..831...21h&link_type=abstract
FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS - FINUSTAR. AIP Conference Proceedings, Volume 831, pp. 21-25 (2006
Astronomy and Astrophysics
Astrophysics
1
Big Bang Nucleosynthesis, 3H-, 3He-, And 4He-Induced Reactions, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages
Scientific paper
The possibility that big-bang nucleosynthesis (BBN) may produce nontrivial amounts of 6Li is under study since the recent observations of this element in old halo stars. However, the interpretation of these observations needs a precise knowledge of the reaction rate of D(α, γ)6Li which, at present, is extremely uncertain (a factor of 20) at the energies of astrophysical interest (Ecm <= 300 keV). This uncertainty originates from difficulties in both theoretical estimates and experimental determinations of the D(α, γ)6Li capture reaction cross section. New measurements of the cross section of D(α, γ)6Li reaction using Coulomb dissociation of 6Li at 150 A MeV have been performed recently at GSI. The results will be compared to previous measurements and theoretical calculations.
Attallah F.
Caamano M.
Coc Alain
Cortina D.
Galaviz Daniel
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