Indirect Study of the Astrophysically Relevant ^6Li(p,α)^3He Reaction by Means of the Trojan Horse Method

概要

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The Trojan Horse Method was applied to the ^2H (^6Li,α^3He) 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 U_e were derived and compared with those obtained from direct measurements.
理論物理学刊行会の論文
2004-07-30