Observation of large incomplete fusion in O-16+Rh-103 system at approximate to 3-5 MeVucleon

摘要

Incomplete fusion of O-16(approximate to 3-5 MeVucleon) with Rh-103 has been investigated using measurement and analysis of excitation functions. Some pxn/alpha pxn-channels are found to have contribution from precursor decay, which has been separated out from cumulative cross-section of evaporation residues. The xn/pxn-channels are found to be satisfactorily reproduced with the predictions of PACE4 after subtraction of pre-cursor decay contribution, in general. Sizable enhancement in the experimental cross-sections has been observed for alpha-emitting channels over the theoretical once, which may be attributed to the incomplete fusion. The percentage fraction of incomplete fusion has also been deduced, which seems to be sensitive for projectile energy, entrance channel mass-asymmetry and/or projectile structure. The present work deals with the competition of incomplete fusion with complete fusion even at approximate to 3-5 MeVucleon for O-16 + Rh-103 system.