The breakup reactions of ${}^8\mathrm{B}$ on a ${}^{12}\mathrm{C}$ target at intermediate energies are studied with regard to the three-body structure of ${}^8\mathrm{B}.$ One-proton removal cross sections, leading to the production of ${}^7\mathrm{Be}$ fragments in the ground and first excited states, and the longitudinal momentum distributions of the ${}^7\mathrm{Be}$ fragments are calculated in eikonal approximation of the Glauber Model with a three-body wave function of the ${}^8\mathrm{B}$ projectile. The results of the calculations including the contribution of the ${}^7\mathrm{Be}$ excited state to the ground state of ${}^8\mathrm{B}$ are compared with available experimental data obtained recently.

• Received 4 September 2002

DOI:https://doi.org/10.1103/PhysRevC.66.064607