Compound and non-compound nucleus contributions in the evaporation residue cross-sections of 20Ne + 181Ta → 201Bi⁎ reaction at Ec.m.=135 MeV and 162 MeV

The simultaneous existence of Compound Nucleus (CN) and Non-Compound Nucleus (NCN) processes in the decay of a nuclear system, provide a comprehensive picture of nuclear reaction dynamics and related phenomenon in low energy region. The CN and NCN based Evaporation Residue (ER) cross-section data is available for 20Ne + 181Ta → 201Bi⁎ reaction at two energies i.e. Elab=150 MeV and Elab=180 MeV, and the same is tested in the framework of Dynamical Cluster Decay Model (DCM). Experimentally, the NCN component is reported to have major contribution from Incomplete Fusion (ICF) channel and the Deep Inelastic Collision (DIC) component is shown to be negligibly small. The ER formed in CN and NCN (ICF in present case) are nicely reproduced in the framework of DCM. The available CN based ER cross-sections are fitted for spherical, β2 deformed and β2–β4 deformed fragmentation paths, which in turn provide a nice description of deformation effects in the decay of 201Bi⁎ formed in 20Ne induced reaction. The role of barrier modification and angular momentum dependence is also addressed in addition to deformation and orientation effects.