INVESTIGATION OF INCOMPLETE FUSION IN 19F+159Tb REACTION AT BEAM ENERGY OF ~ 5 MeV/NUCLEON

Abstract

Formation cross-sections of evaporation residues have been measured in 19 F +159 Tb reaction at E lab =83, 88, 93, 98 and 103 MeV using recoil catcher technique followed by off-line gamma-ray spectrometry. Significant contribution from incomplete fusion has been observed at these low beam energies indicating the contribution to incomplete fusion from collision trajectories with angular momentum (l) less than the critical angular momentum for complete fusion (l cr (CF)) . Incomplete fusion cross-sections could be explained using a modified sum-rule model which allows effective competition from incomplete fusion for collision trajectories with l<l cr (CF) .