Precise integral measurement of fast neutron-induced fission product yields for various actinides is of high interest for applied nuclear science. The goal of this effort is to improve uncertainties in fission product yield values of Np. Fission was induced in a NpO(NO) target using the Godiva IV critical assembly in burst mode. The irradiated sample was transferred to a high-resolution -ray detection setup within 50 minutes. -ray list mode data was collected from 50 minutes to 1 week after the irradiation. -ray spectroscopy was performed to analyze the time dependent -ray yields using an automated peak search algorithm to identify isotopes by their decay -ray energy and half-life. The initial activity for each isotope identified was used to calculate their fission product yield.

中文翻译：

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使用 Godiva IV 临界组件测量 237Np 裂变谱累积裂变产物产率

对各种锕系元素的快中子诱发裂变产物产率的精确积分测量对于应用核科学具有很高的兴趣。这项工作的目标是改善 Np 裂变产物产率值的不确定性。使用 Godiva IV 临界组件在爆发模式下在 NpO(NO) 靶中诱导裂变。经辐照的样品在 50 分钟内转移至高分辨率 射线检测装置。射线列表模式数据是在照射后50分钟至1周内收集的。使用自动峰值搜索算法进行 γ 射线光谱分析，以通过衰变射线能量和半衰期来识别同位素，从而分析与时间相关的 γ 射线产量。确定的每种同位素的初始活度用于计算其裂变产物产量。