Angular distributions of elastic and inelastic scattering of 11B ions by 12C nuclei were measured at the energy E lab ( 11 B)=49 MeV in the angular range θ cm≈24 ∘–156 ∘ for the transitions to the ground and 2.12 MeV (1/2 −), 4.44 MeV (2 +)+4.45 MeV (5/2 −) and 5.02 MeV (3/2 −) excited states of 11B and 12C nuclei. These data and the data of the 12C+ 11B elastic scattering known from the literature in the broad energy range E cm≈5–52 MeV were analyzed by the optical model (OM) and the coupled reaction channels (CRC) method. The elastic, inelastic scattering and one- and two-step transfers were included in the coupling scheme. The energy dependence of the OM potential parameters was studied.
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