Mechanisms of 13C(11B, 7Li)17O reaction at the 11B ion energy 45 MeV

Abstract

Reaction 13C(11B, 7Li)17O at the energy Еlab(11B) = 45 MeV for the ground and excited states of the 7Li and 17O nuclei was studied. The reaction experimental data were analyzed within the coupled-reaction-channels method (CRC). The 13C + 11B elastic scattering channel and one- and two-step reactions transferring nucleons and clus-ters were included in the coupling scheme. The spectroscopic amplitudes of nucleons and clusters needed for the CRC-calculations were computed within the translationally invariant shell model (TISM). The Woods-Saxon (WS) potential was used for the entrance reaction channel with the parameters deduced from the CRC-analysis of the 11B + 13C elastic scattering experimental data when the potential WS and the folding-potential (DF) with im-aginary part, parameters of which were deduced from the fitting of the CRC cross sections to the 13C(11B, 7Li)17O reaction experimental data, were used for the exit 7Li + 17O reaction channel. The parameters of the imaginary WS-potential were deduced in the same way. The parameters of the real part of this potential were obtained by fitting it to the peripheral region of the DF-potential. Isotopic differences of the 13C(11B, 7Li)17O reaction cross sections using the parameters of 7Li + 17O, 7Li + 16О and 7Li + 18O interaction for the exit reaction channel were observed.

Keywords

• nuclear reactions
• optical model
• coupled-reaction-channels method
• folding-model
• spectroscopic amplitudes
• optical potentials