The Bare AstrophysicalS(E) Factor of the7Li(p, α)α Reaction
Open Access
- 1 December 2001
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 562 (2) , 1076-1080
- https://doi.org/10.1086/323868
Abstract
The astrophysically important 7Li(p, α)α reaction has been studied via the Trojan horse method in the energy range E = 10-400 keV. A new theoretical description, based on the distorted-wave Born approximation approach, allows one to extract information on the bare astrophysical S-factor, Sb(E), with Sb(0) = 55 ± 3 keV barns. The results are compared with direct experimental data leading to a model-independent value of the electron screening potential energy, Ue = 330 ± 40 eV, much higher than the adiabatic limit Uad = 175 eV.Keywords
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