熔合势垒形状的唯像研究

根据唯像理论构造了一个势垒顶部出现凹槽的熔合势垒模型,来解决利用现有势垒模型计算出的熔合截面数据与实验数据不相符的问题.使用多级势近似方法计算了不同反应体系的熔合反应截面,发现当势垒厚度和凹槽的位置合适时,计算出的熔合截面数据和实验数据高度符合.该研究为进一步澄清熔合反应中熔合势垒的形状、重离子垒下熔合机制等相关研究提供参考.

Study on the Fusion Barrier Shape Through Phenomenological Approach

In order to solve the problems that the calculated results could not fit well with the experimental data in existing fusion barrier model,a fusion barrier model with a groove at the top of the fusion barrier was constructed through phenomenological approach. Fusion reaction cross sections of different reaction system were calculated by multi-step potential approximation method. The results indicated that the calculated cross sections were in good agreement with the experimental data when the barrier thickness and the position of the groove were adopted suitably. The study provided a reference for further clarification of fusion reaction barrier shape,heavy ions fusion mechanism at sub-barrier energies and other related researches.