The 10 B + 120 Sn reaction has been investigated at E Lab = 37.5 MeV. The cross sections for different channels, such as the elastic scattering, the excitation of the 2 + and 3 − 120 Sn states, the excitation of the 1 + state of 10 B, and the 1n pick-up transfer, have been measured. One-step distorted-wave Born approximation and coupled-reactionchannels calculations have been performed in the context of the double-folding São Paulo potential. The effect of coupling the inelastic and transfer states on the angular distributions is discussed in the paper. In general, the theoretical calculations within the coupled-reaction-channels formalism yield a satisfactory agreement with the corresponding experimental angular distributions.

Experimental angular distributions for the 7 Li + 120 Sn elastic and inelastic (projectile and target excitations) scattering, and for the neutron stripping reaction, have been obtained at E LAB = 20, 22, 24, and 26 MeV, covering an energy range around the Coulomb barrier (V (LAB) B ≈ 21.4 MeV). Coupled channel and coupled reaction channel calculations were performed and both describe satisfactorily the experimental data sets. The 1 2 − state 7 Li inelastic excitation (using a rotational model), as well as the projectile coupling to the continuum (α plus a tritium particle) play a fundamental role on the proper description of elastic, inelastic, and transfer channels. Couplings to the one-neutron stripping channel do not significantly affect the theoretical elastic scattering angular distributions. The spectroscopic amplitudes of the transfer channel were obtained through a shell model calculation. The theoretical angular distributions for the one-neutron stripping reaction agreed with the experimental data.

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The 10 B + 120 Sn reaction has been systematically studied at laboratory energies around the Coulomb barrier: ELAB = 31.5, 33.5, 35.0 and 37.5 MeV. Cross sections for the elastic scattering and some reaction processes have been measured: excitation to the 1 + state of 10 B; excitation to the 2 + and 3 − states of 120 Sn; and the 1 neutron pick up transfer 120 Sn( 10 B, 11 B) 119 Sn. Coupled Reaction Channels (CRC) calculations have been performed in the context of the double-folding São Paulo Potential. The theoretical calculations result on a good overall description of the experimental angular distributions. The effect on the theoretical elastic scattering angular distributions of couplings to the inelastic and transfer states (through the CRC calculations) and to the continuum states (through Continuum-Discretized Coupled-Channels calculations) has been investigated.

A Woods-Saxon equivalent to a double folding potential in the surface region is obtained for the heavy-ion scattering potential. The Woods-Saxon potential has fixed geometry and was used as a bare potential in the analysis of elastic scattering angular distributions of several stable systems. A new analytical formula for the position and height of the Coulomb barrier is presented, which reproduces the results obtained using double folding potentials. This simple formula has been applied to estimate the fusion cross section above the Coulomb barrier. A comparison with experimental data is presented.