New angular distributions for the ${}^7\mathrm{Li}({}^{10}\mathrm{B},{}^9\mathrm{Be}){}^8\mathrm{Be}$ reaction at an energy of $E_{\mathrm{lab}}({}^{10}\mathrm{B})=51$ MeV for the ground and excited states of ${}^8\mathrm{Be}$ were analyzed within the coupled-reaction-channels method. The reactions are dominated by single proton transfer at forward angles except for that to the ${}^8\mathrm{Be}$ 11.35-MeV state, which requires multistep routes for its population. The ${}^8\mathrm{Be}+{}^9\mathrm{Be}$ potential parameters for ground and excited states of ${}^8\mathrm{Be}$ were deduced by fitting ${}^7\mathrm{Li}({}^{10}\mathrm{B},{}^9\mathrm{Be}){}^8\mathrm{Be}$ and ${}^{10}\mathrm{B}({}^7\mathrm{Li},{}^9\mathrm{Be}){}^8\mathrm{Be}$ reaction data and are compared with a previously determined ${}^7\mathrm{Be}+{}^9\mathrm{Be}$ potential. The ${}^8\mathrm{Be}+{}^9\mathrm{Be}$ real potential is very similar to that for ${}^7\mathrm{Be}+{}^9\mathrm{Be}$, whereas the imaginary one for ${}^8\mathrm{Be}+{}^9\mathrm{Be}$ has a much greater spatial extent than that for ${}^7\mathrm{Be}+{}^9\mathrm{Be}$.

• Received 21 October 2008

DOI:https://doi.org/10.1103/PhysRevC.79.054609