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过去几十年,近库仑势垒能区重离子熔合反应的实验和理论研究是一个重要的前沿课题。对于较重体系的熔合,实验发现由于多个内部自由度与相对运动的耦合,可能使得近库仑势垒附近及垒下能量测量到的熔合截面较一维势垒穿透模型计算值高许多。通常使用耦合道理论模型解释这种垒下熔合截面增强的现象,研究表明其中涉及到非弹道和核子转移道等可能会影响垒下熔合截面的自由度。目前虽然已认识到耦合道效应的
In the past few decades, experimental and theoretical studies of heavy ion fusion reactions in the near-Coulomb potential region have been an important frontier topic. For the fusion of heavier systems, it is found that due to the coupling of multiple internal degrees of freedom and relative motion, the fused sections measured near and below the near-Coulomb may have a much higher calculated value than the one-dimensional barrier penetration model. The coupling theory model is usually used to explain the enhancement of the fusion cross section under the barrier. Studies have shown that the non-ballistic and nuclear transfer paths involved may affect the degree of freedom of the fusion cross section under the barrier. Although the coupling effect has been recognized at present