Abstract
The 10B(p,α0)7Be reaction has been studied by applying the Trojan Horse method to the 2H(10B,α0 7Be)n reaction. The bare-nucleus astrophysical S(E)-factor in absolute units was extracted in a wide energy range, from 2.2 MeV to 3 keV and normalized to the direct experimental data, thus allowing determination of the electron screening potential for which a value of Ue=391±74 eV was obtained.
Highlights
For a proper understanding of the stellar structure and evolution, the precise determination of the abundances of light elements such as Li, Be and B is crucial
Since the depletion of these elements occurs at different depths in stars, their surface abundances are strongly influenced by the burning process as well as by the extension of the convective layer
These elements can be used as a probe for the internal stellar structure [1,2,3]
Summary
For a proper understanding of the stellar structure and evolution, the precise determination of the abundances of light elements such as Li, Be and B is crucial. Since the depletion of these elements occurs at different depths in stars, their surface abundances are strongly influenced by the burning process as well as by the extension of the convective layer. These elements can be used as a probe for the internal stellar structure [1,2,3]. Since the presence of low-energy resonances can introduce significant uncertainties in the extrapolation procedure, the proper evaluation of the 10B(p,α)7Be reaction rate can be done by applying the Trojan. The experiment presented in this paper is a further study of the 10B(p,α0)7Be reaction, performed in order to complete the previously started experimental program [14, 15]
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