标题： 深亚势垒重离子融合阻碍现象的可能根源 显示英文标题

标题： Potential roots of the deep sub-barrier heavy-ion fusion hindrance phenomenon

摘要： 我们分析了64Ni+100Mo和28Si+64Ni反应中意外的深亚屏障重离子融合阻碍的起源。 我们的分析基于改进的耦合通道方法，该方法通过有限元法实现。 借助Woods-Saxon势，这些反应的实验截面和S因子得到了显著良好的再现。 我们发现，对耦合矩阵的非对角矩阵元的传统忽略，在设置势阱内的左边界条件时，以及其最小值对于解释实验数据至关重要。 在我们的方法中，我们发现融合反应12C+12C的S因子与实验数据有很好的一致性，该体系的S因子没有明显的最大值。 显示英文摘要

摘要： We analyse the origin of the unexpected deep sub-barrier heavy-ion fusion hindrance in 64Ni+100Mo and 28Si+64Ni recations. Our analysis is based on the improved coupled-channels approach, implemented by means of the finite element method. With the aid of the Woods-Saxon potential the experimental cross sections and the S-factors of these reactions are remarkably well reproduced. We found that the account on the non-diagonal matrix elements of the coupling matrix, traditionally neglected in the conventional coupled-channels approaches in setting the left boundary conditions inside the potential pocket, and its minimal value are crucially important for the interpretation experimental data. Within our approach we found a good agreement with the experimental data for the S-factor of the fusion reaction 12C+12C, which has no a pronounced maximum for this system.