发表机构
Guangxi Normal University; Guangxi Key Laboratory of Nuclear Physics and Technology; Institute of Theoretical Physics, Chinese Academy of Sciences; Nanjing University of Aeronautics and Astronautics; Hunan Normal University; Yangzhou University; China Institute of Atomic Energy; Sun Yat-sen University; University of Chinese Academy of Sciences（广西师范大学; 广西核物理与技术重点实验室; 中国科学院理论物理研究所; 南京航空航天大学; 湖南师范大学; 扬州大学; 中国原子能科学研究院; 中山大学; 中国科学院大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出普适经验耦合道模型ECC2，结合修正势与形变依赖势垒分布，精确描述超重核合成中俘获截面，与367个体系数据吻合，rms偏差1.39 MeV。
AI 中文摘要
针对重离子熔合反应中俘获截面的系统描述，提出了一个普适的经验耦合道模型ECC2。该模型结合了修正的Broglia--Winther势、有效势垒曲率以及依赖于形变的势垒分布宽度。ECC2预测的最可几势垒高度与基于367个体系的测量激发函数提取的值吻合良好，均方根偏差为1.39 MeV。ECC2被应用于从$^{16}$O+$^{197}$Au到$^{54}$Cr+$^{248}$Cm的25个熔合反应。预测的俘获激发函数与EBD2.2的预测在所有体系上一致，并与可用的实验数据吻合良好。
英文摘要
A universal empirical coupled channel model, ECC2, is proposed for the systematic description of capture cross sections in heavy-ion fusion reactions. The model combines a modified Broglia--Winther potential, an effective barrier curvature, and a deformation-dependent barrier distribution width. The most probable barrier heights predicted by ECC2 are in good agreement with the extracted values based on measured excitation functions for 367 systems, and the root-mean-square (rms) deviation is 1.39 MeV. ECC2 is applied to 25 fusion reactions ranging from $^{16}$O+$^{197}$Au to $^{54}$Cr+$^{248}$Cm. The predicted capture excitation functions are consistent with the EBD2.2 predictions for all systems and agree well with the available experimental data.
Comments18 pages, 8 figures
