Systematics of capture barriers from measured excitation functions
Duan, Miss Yi-Jie Yao, Dr. Hong Ma, Miss Yun-Qin Xie, Miss Yi Wang, Prof. Ning
Systematics of capture barriers from measured excitation functions
Systematics of capture barriers from measured excitation functions
摘要
The accurate prediction of heavy-ion capture cross sections is central to superheavy nucleus synthesis, with precision critically dependent on reliable barrier parameters. In this study, a systematic analysis of 348 sets of experimental capture cross section data was conducted employing two independent extraction methods: the Gaussian barrier distribution method and the linear fit based on the classical cross section formula. These methods yielded 317 and 281 sets of barrier parameters, respectively. From the combined results, a comprehensive dataset was constructed, encompassing key capture parameters—barrier height ($V_{B}$), distribution width ($W$), and barrier radius ($R_{B}$)—for a broad range of reaction systems from light to heavy nuclei. The extracted barrier parameters demonstrate good agreement with multiple theoretical predictions, thus establishing a reliable dataset for benchmarking capture models and cross section predictions. This provides a validated experimental benchmark for testing theoretical models and predicting unknown reaction cross sections.