Fusion cross sections of the ²⁸Si + ¹⁰⁰Mo system have been measured near and below the Coulomb barrier by detecting the evaporation residues at forward angles. The excitation function has an overall smoother trend than what obtained in a previous experiment, and a large discrepancy is found for the lowest-energy region, where we observe a tendency of the S factor to develop a maximum, which would be a clear indication of hindrance. The results have been compared with the theoretical prediction of coupled-channels calculations using a Woods–Saxon nuclear potential, and including the low-energy excitation modes of both nuclei. Good agreement with data is found by including, in the coupling scheme, the three lowest members of the ground state rotational band of the oblate deformed ²⁸Si, and two-phonons of the strong quadrupole vibration of ¹⁰⁰Mo. The additional coupling, in a schematic way, of the two-neutron pick-up between ground states (Q-value = +4.86 MeV) has a minor effect on calculated cross sections, and does not essentially improve the data fit. The excitation function of ²⁸Si + ¹⁰⁰Mo has been compared with that of (1) the heavier system ⁶⁰Ni + ¹⁰⁰Mo having analogous features, and (2) several near-by ²⁸Si, ³²S + Zr, Mo systems with various nuclear structures and transfer Q-values. The role of quadrupole and octupole excitation modes, as well as of transfer channels, in affecting the fusion dynamics, are clarified to some extent. Systematic measurements of fusion barrier distributions and CC calculations properly including transfer couplings, are necessary, in order to shed full light on the influence of the various coupled channels on the fusion cross sections.

²⁸ Si + ¹⁰⁰ Mo 系统的熔合截面已通过检测前角的蒸发残留物在库仑势垒附近和下方进行测量。激发函数的整体趋势比先前实验中获得的趋势更平滑，并且在最低能量区域发现了很大的差异，我们观察到S的趋势产生最大值的因素，这将是阻碍的明显迹象。结果与使用 Woods-Saxon 核势的耦合通道计算的理论预测进行了比较，包括两个核的低能激发模式。通过在耦合方案中包括扁形变形²⁸ Si基态旋转带的三个最低成员和¹⁰⁰ Mo强四极振动的两个声子，发现与数据的良好一致性。基态之间的两个中子拾取的示意图方式（Q值 = +4.86 MeV）对计算的横截面影响较小，并不会从本质上改善数据拟合。²⁸的激励函数Si + ¹⁰⁰ Mo 已与 (1)具有类似特征的较重系统⁶⁰ Ni + ¹⁰⁰ Mo，以及 (2) 几个具有各种核结构和转移Q 的邻近²⁸ Si、³² S + Zr、Mo 系统进行比较-值。在一定程度上阐明了四极和八极激发模式以及传输通道在影响融合动力学方面的作用。融合势垒分布的系统测量和 CC 计算适当地包括传递耦合，是必要的，以便充分阐明各种耦合通道对融合截面的影响。