Most evaluated elemental fission product yield distributions are not experimentally measured. Instead, the majority of evaluated distributions are based on analytic expressions of the Zp-model for relevant cumulative yields. Here we report independent elemental fission product yield distributions of a ²³⁵U target for incident neutron energies ranging from 0.11 MeV through 92.4 MeV. Atomic numbers are calculated by an approach that combines a 2E analysis with a stopping force analysis method, developed within this paper. These analyses are applied to more than 6.1 × 10⁶ fission fragment ionization tracks captured within the NIFFTE (Neutron Induced Fission Fragment Tracking Experiment) collaboration fission time projection chamber (fissionTPC). A 3-Z resolution was obtained with the fissionTPC spatial and energy resolutions. Tabulated results are presented for the atomic yield and experimentally derived Zp values as a function of pre-neutron-emission fragment masses for the complete range of incident neutron energies. The stopping-force-derived Zp values tend to support the unchanged charge distribution theory within uncertainty.

大多数评估的元素裂变产物产率分布不是通过实验测量的。相反，大多数评估分布是基于Zp模型的分析表达式，以获得相关的累积产量。在这里，我们报告了²³⁵ U 靶的独立元素裂变产物产率分布，入射中子能量范围为 0.11 MeV 至 92.4 MeV。原子序数的计算方法是将 2 E分析与本文开发的制动力分析方法相结合。这些分析适用于超过 6.1 × 10 ⁶在 NIFFTE（中子诱导裂变碎片跟踪实验）协作裂变时间投影室 (fissionTPC) 内捕获的裂变碎片电离轨迹。使用裂变 TPC 空间和能量分辨率获得了 3-Z 分辨率。列出的结果是原子产率和实验得出的Zp值作为整个入射中子能量范围的中子发射前碎片质量的函数。制动力导出的Zp值倾向于支持在不确定性内不变的电荷分布理论。