The B-10(p,alpha(0))Be-7 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 alpha(0) and alpha(l) channels of the B-10 + H-2 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 U-e = 391 +/- 74 eV was obtained for the electron screening potential.
Trojan horse measurement of the B10(p,α0)Be7 cross section in the energy range from 3 keV to 2.2 MeV
Spartá, R.;Gulino, M.;Tumino, A.
2018-01-01
Abstract
The B-10(p,alpha(0))Be-7 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 alpha(0) and alpha(l) channels of the B-10 + H-2 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 U-e = 391 +/- 74 eV was obtained for the electron screening potential.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
