  Within the post-form distorted wave Born approximation wherein pure Coulomb,
pure nuclear and their interference terms are treated consistently in a single
setup we study the beam energy dependence of the Coulomb-nuclear interference
terms in the breakup of 11Be on a medium mass 44Ti target. Our results suggest
that the Coulomb-nuclear interference terms are dependent on the incident beam
energy and can be as big as that of the individual Coulomb or nuclear terms
depending on the angle and energy of the breakup fragments. We also calculate
the relative energy spectra and one-neutron removal cross sections in the
breakup of 11Be on a heavy 208Pb target at 69 MeV/nucleon for two different
angular ranges of the projectile center of the mass scattering angle and
compare them with recently available experimental data.
