  The barrier distribution, originated from channel coupling effects in
heavy-ion fusion reactions, has been extracted experimentally for many systems
using either a fusion excitation function or an excitation function of
large-angle quasi-elastic scattering. In this article, we discuss an
application of the latter method to the $^{48}$Ca+$^{248}$Cm system, which is
relevant to hot fusion reactions to synthesize superheavy elements. To this
end, we carry out coupled-channels calculations for this system, taking into
account the deformation of the target nucleus, and discuss the role of
deformation in a formation of evaporation residues.
