Within a theory of breakup reactions formulated in the framework of the post-form distorted wave Born approximation, we calculate contributions of the pure Coulomb and the pure nuclear breakups as well as those of their interference terms, to a variety of cross sections in breakup reactions of the one-neutron halo nucleus ${}^{11}\mathrm{Be}$ on a number of target nuclei. In contrast to the assumption often made, the Coulomb-nuclear interference terms are found to be non-negligible in case of exclusive cross sections of the fragments emitted in this reaction on medium mass and heavy target nuclei. The consideration of the nuclear breakup leads to a better description of such data.

• Received 4 July 2002

DOI:https://doi.org/10.1103/PhysRevC.66.061601