  An analysis of the $^{231}$Pa$(d,3n)$$^{230}$U reaction excitation function
at energies around the Coulomb barrier has taken into account the
pre-equilibrium and compound-nucleus cross sections corrected for the
deuteron-breakup decrease of the total reaction cross section, as well as the
inelastic breakup enhancement. The analysis reveals the dominance of the
deuteron breakup mechanism unlike a former assessment in this respect of the
deuteron-induced fission process.
