We study theoretically the elastic scattering of ${}^8\mathrm{B}$ from ${}^{12}\mathrm{C}$ at $E_{\mathrm{lab}}=95$ MeV. The ${}^8\mathrm{B}$ nucleus consists of weakly bound ${}^7\mathrm{Be}$ and proton, while the ${}^7\mathrm{Be}$ nucleus has an internal cluster structure of $\alpha +{}^3\mathrm{He}$. We treat the last proton in ${}^8\mathrm{B}$ in the adiabatic recoil approximation and also take into account the excitation of ${}^7\mathrm{Be}$ including resonance states by a coupled-channel method with consideration of the cluster structure. It turns out that the excitation to the resonance state of ${}^7\mathrm{Be}$ in ${}^8\mathrm{B}$ is important for the ${}^8\mathrm{B}$ elastic scattering.

• Received 19 April 2010

DOI:https://doi.org/10.1103/PhysRevC.81.061602