The incomplete fusion dynamics in the ${}^{18}\mathrm{O}+{}^{93}\mathrm{Nb}$ system at energies above the Coulomb barrier has been investigated. The experimentally measured cross sections have been compared with the theoretical predictions of the statistical model code pace4. To examine the effect of entrance channel parameters on the onset and strength of incomplete fusion, relative contributions of complete and incomplete fusion have been deduced from the analysis of measured excitation functions. The contribution of incomplete fusion deduced from the analysis of excitation functions has been studied in terms of various entrance channel parameters, namely, entrance channel mass asymmetry (${\mu }_A$) of interacting projectile and target combination, Coulomb factor ($Z_P{Z}_T$), ground state $\alpha \text{−}Q$ value of the reaction, and neutron skin thickness of target nuclei. It has been found that the probability of incomplete fusion depends strongly on entrance channel parameters. Further, the incomplete fusion contribution for the ${}^{18}\mathrm{O}$ projectile with two excess neutrons is noticed to be relatively larger as compared to ${}^{16}\mathrm{O}$. This may be due to the larger probability of breakup for the ${}^{18}\mathrm{O}$ projectile resulting in rather weak binding forces as compared to ${}^{16}\mathrm{O}$. The existence of incomplete fusion below critical angular momentum (${\ell }_{\mathrm{crit}}$), i.e., $\ell ⩽{\ell }_{\mathrm{crit}}$, has also been observed for the studied system.

中文翻译：

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入口通道中子过量对O18 + Nb93系统的影响：与不完全融合动力学有关的实验研究

核中的不完全融合动力学 ${}^{\mathrm{18岁}}\mathrm{Ø}+{}^{93}铌$已经研究了在库仑势垒以上能量下的系统。实验测量的横截面已与统计模型代码步伐的理论预测进行了比较。为了检查入口通道参数对不完全融合的开始和强度的影响，已经从测量的激励函数的分析中推导了完全和不完全融合的相对贡献。根据各种入口通道参数，即入口通道质量不对称（${\mu }_{\mathrm{一种}}$弹丸和目标组合的相互作用），库仑系数（${ž}_P{ž}_{Ť}$），基态 $\alpha \text{-}问$反应值和目标核的中子皮厚度。已经发现，不完全融合的可能性在很大程度上取决于入口通道参数。此外，对于${}^{\mathrm{18岁}}\mathrm{Ø}$ 与两个过剩的中子相比，弹丸相对于 ${}^{16}\mathrm{Ø}$。这可能是由于${}^{\mathrm{18岁}}\mathrm{Ø}$ 相比于 ${}^{16}\mathrm{Ø}$。在临界角动量以下存在不完全融合（${\ell }_{\mathrm{暴击}}$）， IE， $\ell ⩽{\ell }_{\mathrm{暴击}}$对于所研究的系统，也观察到。