区分类裂变事件与深部非弹性碰撞
Distinguishing fission-like events from deep-inelastic collisions
AI总结：
本文提出两个函数以区分类裂变事件与准弹性散射及深部非弹性碰撞，利用Skyrme能量密度泛函和量子分子动力学模拟，发现捕获与接触截面比率随捕获口袋深度增加而增加。
摘要：
我们提出了两个函数，用于区分类裂变事件与准弹性散射和深部非弹性碰撞，以便更好地分析在聚变-裂变反应中形成的二元碎片的测量质量-总动能分布。我们注意到，捕获事件与深部非弹性碰撞事件的比率随着从Skyrme能量密度泛函预测的捕获口袋深度的减小而明显下降，据此可以从测量的质量-能量分布中提取捕获口袋。结合改进的量子分子动力学模拟（其中反应伙伴的典型接触时间对于准弹性散射小于200 fm/c，对于类裂变事件大于600 fm/c），我们发现捕获截面与接触截面的比率系统地随着口袋深度的增加而增加。
英文摘要：
We propose two functions to distinguish fission-like events from quasi-elastic (QE) scattering and deep inelastic collisions (DIC), for a better analysis of the measured mass-total kinetic energy distributions of binary fragments formed in fusion-fission reactions. We note that the ratio of capture to DIC events evidently decreases with the decreasing of the depth of the capture pocket predicted from the Skyrme energy density functional, with which the capture pocket could be extracted from the measured mass-energy distributions. Together with the improved quantum molecular dynamics simulations, in which the typical contact time of the reaction partners is smaller than 200 fm/c for QE and is larger than 600 fm/c for fission-like events, we find that the ratio of capture to touching cross section systematically increases with the pocket depth.
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