Abstract
To study the low energy incomplete fusion, excitation functions have been measured in the 16O + 165 Ho system using a well-established activation technique. The analysis of the present work has been carried out in the frame work of the statistical model code PACE4. The results show that the yields of complete fusion channels agree well with the theoretical predictions of the model code PACE4. However, α-emitting channels have a significant incomplete fusion fraction even at ℓ < ℓcrit
Highlights
At moderate excitation energies the dominating fusion processes are (i) Complete Fusion (CF) and Incomplete Fusion (ICF) [1, 2]
In order to study the low energy ICF reaction dynamics, the excitation functions (EFs) of twelve evaporation residues have been measured in the 16O + 165Ho interaction at energies ≈ 4-7 MeV/nucleon
In this figure we can see that the sum of experimentally measured EFs of all αemitting channels is significantly higher than PACE4 predictions for the same value of level density parameter (i.e., a = A/8 MeV−1) has been used to compare CF residues in the present work
Summary
At moderate excitation energies the dominating fusion processes are (i) Complete Fusion (CF) and Incomplete Fusion (ICF) [1, 2]. The distinction between CF and ICF can be made on the basis of driving input angular momenta [3, 4] as suggested by Wilczynski et al [3] in their sumrule model hypothesis. In this hypothesis they asummed a sharp cut-off approximation, according to which the probability of CF is asummed to be unity for = crit and expected to be zero for > crit. In recent time several studies have observed the occurrence of ICF processes in the vicinity of Coulomb barrier [5,6,7,8]. The present work evidences the occurrence of a diffused boundary in the -window for the fusion processes
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