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R-matrix analysis of the 3He(n, p)3H and 7Be(n, p)7Li reactions

par Adahchour, Abderrahim ;Descouvemont, Pierre
Référence Journal of physics. G, Nuclear and particle physics, 29, 2, page (395-403)
Publication Publié, 2003-02

Article révisé par les pairs

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Résumé :

We apply the R-matrix formalism to the 3He(n, p)3H and 7Be(n, p)7Li reactions, which play an important role in the big-bang nucleosynthesis. The cross sections are analysed along with the 4He and 8Be spectra near threshold. Neutron and proton widths of high-energy states are determined. A statistical analysis of the uncertainties provide fairly low error bars (typically 2% at the 1σ confidence level) on the reaction rates.