The Trojan Horse Method was applied to the 2H(6Li,α3He)n three-body reaction in order to extract the bare nucleus S(E) factor for the 6Li(p,α)3He reaction. The three-body reaction was performed in two kinematically complete experiments at beam energies of 25 and 14 MeV. The selected quasi-free coincidence yield was compared with the result of a Monte Carlo calculation where the entering two-body cross section was the result of a R-matrix parameterization of the direct two-body cross section. The quite good agreement throughout the investigated region above and below the p-6Li Coulomb barrier, allowed for the extraction of the bare S(E) factor in the astrophysical energy region. The S(0) value together with an independent estimate of the screening potential Ue were derived and compared with those obtained from direct measurements.

Indirect study of the astrophysically relevant reaction 6Li(p,alpha)3He by means of the Trojan Horse Method

PAPPALARDO, Luciano Libero;
2004

Abstract

The Trojan Horse Method was applied to the 2H(6Li,α3He)n three-body reaction in order to extract the bare nucleus S(E) factor for the 6Li(p,α)3He reaction. The three-body reaction was performed in two kinematically complete experiments at beam energies of 25 and 14 MeV. The selected quasi-free coincidence yield was compared with the result of a Monte Carlo calculation where the entering two-body cross section was the result of a R-matrix parameterization of the direct two-body cross section. The quite good agreement throughout the investigated region above and below the p-6Li Coulomb barrier, allowed for the extraction of the bare S(E) factor in the astrophysical energy region. The S(0) value together with an independent estimate of the screening potential Ue were derived and compared with those obtained from direct measurements.
nucleosynthesis; proton capture reaction; depletion of Litium
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/534430
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