Improved information on the 2H(6Li,α)4He reaction extracted via the ``Trojan horse'' method

Physics – Nuclear Physics

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Hydrostatic Stellar Nucleosynthesis, Single-Particle Levels And Strength Functions, Direct Reactions, Transfer Reactions

Scientific paper

We have studied the 2H(6Li,α)4He two-body reaction by applying the ``Trojan horse'' method (THM) to the 6Li(6Li,αα)4He three-body reaction. The astrophysical S(E) factor has been extracted in the energy range between 10-800 keV for the two cases of target and projectile quasifree break-up. We found good agreement between the two data sets leading an improved determination of the S(E) with S(0)=16.9+/-0.5 MeV b. Furthermore, the electron screening potential energy Ue=320+/-50 eV has been extracted in a model-independent way by comparing direct and THM data. This value is significantly higher than the value predicted by current theoretical models.

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