Prompt γ-ray Spectral Data from 252Cf(SF), 235U(nth, f) and 241Pu(nth, f)

In this paper we talk about our work in developing a method to measure and analyze prompt fission γ-rays, as well as our re- sults from the measurement of three different reactions, namely 252Cf(SF), 235U(nth, f) and 241Pu(nth, f). The first two had, at the beginning of our measurements, not been examined since the early 1970s, and the last reaction had never been measured. Our results show a slight improvement over evaluated data-tables in comparison with benchmark experiments, but can still not explain all of the underestimation witnessed. Our results also show that new evaluations is needed, especially for 252Cf(SF) and 241Pu(nth, f).