https://doi.org/10.1140/epja/s10050-023-01096-3
Regular Article - Experimental Physics
Study of the energy dependence of the 
Li(p,
)
He reaction at energies of astrophysical interest
1
INFN - Laboratori Nazionali del Sud, Via S. Sofia 62, 95123, Catania, Italy
2
Dipartimento di Fisica e Astronomia Ettore Majorana, Universitá degli Studi di Catania, Catania, Italy
3
Institut für Kernphysik, Technische Universität Darmstadt, Fachbereich Physik, Schlossgartenstraße 9, 64289, Darmstadt, Germany
4
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Theorie, Planckstraße 1, 64291, Darmstadt, Germany
5
Lawrence Livermore National Laboratory, 94551, Livermore, CA, USA
Received:
28
March
2023
Accepted:
24
July
2023
Published online:
7
August
2023
Experimental cross sections 
of the Li(p,)He reaction, available in literature, are reanalyzed to evaluate the energy dependence of the bare-nucleus cross section, , down to energies of astrophysical interest. A new extrapolation below 100 keV is obtained through a theoretical description of laboratory data in a R-matrix calculation that was fitted to published data at higher energies in the range 
. This approach is complementary to the standard one where the extrapolation is performed by fitting the experimental trend with a polynomial astrophysical S factor. Quantities of astrophysical interest, such as the zero-energy S factor and the electron screening potential, are evaluated and compared with literature values.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
