During the last few decades, research in heavy-ion induced nuclear reactions has opened numerous fields, in its theoretical and experimental domains. At energies, from near the Coulomb barrier to well above it, the complete fusion (CF) and incomplete fusion (ICF) reactions compete with each other. The relative contribution of these processes depends on various entrance channel parameters. In order to study the dependence of CF and ICF reaction dynamics on various entrance channel parameters, comparative studies with different parameters of the statistical model codes have been done. In this paper, an attempt has been made to study the dependence of incomplete fusion strength function on incident energy for ¹²C + ¹⁶⁵Ho system at energies ≤ 7 MeV/A. The analysis of data has been done within the frame work of statistical model code PACE4, which do not take ICF into account; and thus predicts cross-section values only due to complete fusion process. For the present reaction system, the excitation functions (EFs) of xn/pxn channels, predicted by PACE4 code, well reproduces the experimentally measured values, indicating their production via CF process only. However, for α and 2α-emitting channels, calculated EFs through PACE4 code underpredict the experimentally measured cross-sections by »25-30%, in general. The enhancement of experimental cross-sections for α and 2α-emitting channels as compared to the PACE4 predictions, indicates that the major contribution of their production comes from the ICF of ¹²C, if it breaks up into ⁸Be and α-fragments, and one of the fragments fuses with the target nucleus. The incomplete fusion strength function (F_ICF), which gives relative importance of ICF processes over CF process has also been deduced and is found to depend sensitively on beam energy.

中文翻译：

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Elab≤7MeV / A时12C + 165Ho系统的ICF强度函数随射弹能量的变化

在过去的几十年中，重离子诱发核反应的研究在理论和实验领域开辟了许多领域。从库仑势垒附近到其上方的能量，完全聚变（CF）反应和不完全聚变（ICF）反应相互竞争。这些过程的相对贡献取决于各种入口通道参数。为了研究CF和ICF反应动力学对各种入口通道参数的依赖性，已经对统计模型代码的不同参数进行了比较研究。本文尝试研究¹² C + ^165时不完全融合强度函数对入射能量的依赖性Ho系统的能量≤7 MeV / A。数据分析是在统计模型代码PACE4的框架内完成的，没有考虑ICF；因此仅由于完全融合过程才能预测横截面值。对于本反应系统，通过PACE4代码预测的xn / pxn通道的激发函数（EFs）很好地再现了实验测量值，表明它们仅通过CF过程产生。但是，对于发射α和2α的通道，通过PACE4代码计算出的EF通常会使实验测量的横截面预测不足25-30％。与PACE4预测相比，发射α和2α发射通道的实验截面的增强表明，其生产的主要贡献来自¹²的ICFC，如果它分解成⁸ Be和α片段，其中一个片段与目标核融合。还推导了不完全的融合强度函数（F _ICF），它赋予了ICF过程比CF过程更高的相对重要性，并且发现它很敏感地依赖于束能量。