Trojan horse measurement of the B-10(p,alpha(0))Be-7 cross section in the energy range from 3 keV to 2.2 MeV

The B10(p,α0)Be7 excitation function has been studied in a wide energy range, from 2.2 MeV down to astrophysical energies, reproducing the cross section above and below the Coulomb barrier in a single experiment. An optimized experimental setup ensured good energy resolution and for the first time a clear separation of α0 and α1 channels of the B10+H2 interaction has been achieved by applying the Trojan Horse method. An improved normalization of the Trojan Horse bare-nucleus astrophysical S(E)-factor to direct data was performed and a value of Ue=391±74eV was obtained for the electron screening potential.