  Two cluster structures of 9Be namely, 5He+4He and 8Be+n have been considered
for its breakup to describe the available data on elastic scattering for 9Be
projectile with 28Si, 64Zn and 144Sm targets. The results of these calculations
suggest that the breakup coupling effects are significant for 5He+4He cluster
model at above the barrier energies, while they are dominant at relatively
lower energies for 8Be+n model. The addition of one neutron stripping channel
in the 8Be+n model gives an overall good description of the elastic data for
all the systems considered. The couplings generated by breakup in 8Be+n model
have different behaviour than the coupling effects obtained within the 5He+4He
model, the former being more prominent at lower energies and for the heavier
target systems. The behaviour of extracted dynamic polarisation potentials
(DPP) generated due to breakup and one neutron transfer couplings have been
investigated.
