  The contributions to the reaction cross section from the elastic and
inelastic breakup processes, calculated within the post-form distorted wave
Born-approximation theory, are used as constraints to determine the
contributions to the imaginary part of the deuteron optical potentials (IPDOP)
due to the breakup channels. The Coulomb part of this potential due to the
elastic breakup process is seen to account for the long range absorption in the
optical potential. The nuclear parts of the IPDOP due to the elastic and
inelastic breakup modes peak in different regions of the nuclear surface, with
the latter being almost an order of magnitude larger than the former. This
makes the IPDOP due to the breakup channels determined by us stronger than
those calculated earlier ignoring the inelastic breakup mode.
