[en] Knowledge of the primordial nucleosynthesis offers a powerful tool to retrieve information on the baryon density of the Universe. In this context lithium isotopes play a crucial role and in particular we stress how important the bare nucleus cross-section for the ⁷Li(p,α)⁴He reaction is. Recent application of the Trojan Horse Method led to an indirect measurement of that cross-section. In the present paper its astrophysical implications are examined in the case of the Solar lithium problem and of the primordial nucleosynthesis. (authors)

[en] The Trojan Horse Method has been applied to obtain information about ⁷Li(p,α),⁴He reaction at astrophysical energies. The ⁷Li(d,α n)⁴He reaction has been used and the two body reaction cross section for the ⁷Li(p,α)⁴He has been extracted together with its astrophysical factor S(E)

[en] The Trojan-Horse Method has been applied to the three-body d(⁶Li,α³He)n break-up reaction in order to extract the bare nucleus S(E) factor for the ⁶Li(p,α)³He down to astrophysical energies

[en] The bare nucleus cross section for the ⁶Li(p, α)³He reaction has been extracted in the energy range from 2.3 MeV down to astrophysical energies by means of the Trojan-Horse-Method applied to the three-body d(⁶Li,α³He)n break-up reaction

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[en] The ⁶Li(d, α)⁴He reaction, whose astrophysical importance is connected to the primordial nucleosynthesis in the framework of the Inhomogeneous Big Bang, has been studied by using the Trojan Horse Method (THM). We derive and discuss the cross section and the astrophysical S(E)-factor for E_cm=0.025-0.7 MeV. Results are compared with data from a direct measurement

[en] The Trojan-Horse method has been applied to the ⁶Li(¹²C,α¹²C)²H reaction at 18 MeV in order to study the two body α-¹²C interaction around the Coulomb barrier. Concidence spectra show clear evidence of the quasi-free α-¹²C scattering, in good agreement with calculations performed in the framework of the Plane Wave Born Approximation. The virtual excitation function of the α-¹²C elastic scattering has been extracted and compared with the behavior of the free scattering cross section

[en] The Trojan Horse Method has been applied to study the ⁷Li(p, α)⁴He and ⁶(Li(d, α)⁴He reactions through the ⁷Li(d, αα)n and ⁶Li(⁶Li, αα)⁴He three body processes, respectively. The electron screening potential deduced from these experiments is much larger than the adiabatic approximation prediction for both cases; the systematic discrepancy between data and theoretical predictions is thus confirmed. Astrophysical implications of these measurements are also discussed

[en] The basic features of the Trojan Horse Method are discussed together with a review of recent applications, aimed to extract the bare astrophysical S(E)-factor for several two-body processes. In this framework information on electron screening potential U_e was obtained from the comparison with direct experiments

[en] The Trojan-Horse method has been applied to the ⁶Li(¹²C,α¹²C)²H reaction at 18 MeV in order to study the two body α-¹²C interaction around the Coulomb barrier. Concidence spectra show clear evidence of the quasi-free α-¹²C scattering, in good agreement with calculations performed in the framework of the Plane Wave Born Approximation. The virtual excitation function of the α-¹²C elastic scattering has been extracted and compared with the behavior of the free scattering cross section