An attempt has been made to understand the effect of entrance-channel parameters on low-energy
incomplete fusion and a strong projectile dependence in terms of projectile’s α-Q-value has been observed. In
the present work, the excitation functions of 16O,13,12C+159Tb systems have been measured and compared with
PACE4 predictions to study the involvement of different reaction processes. The strength of incomplete fusion
reactions for all the studied systems have been extraced and compared to find out the systematics.