Correlations between fission fragment yields and the prompt fission γ-ray spectrum

We illustrate correlations between the prompt fission γ-ray spectrum (PFGS) and the input fission fragment yields Y (A) with a Monte Carlo implementation of the statistical Hauser-Feshbach decay theory, the CGMF code. We find that the slope of the PFGS at high γ-ray energies is correlated to the yields near the closed- shell 132 Sn nucleus. Low-energy PFGS peaks from discrete transitions of particular post-neutron fission products result from a complex interplay between the yields, the nuclear level structure, and the spin of nearby nuclei. We demonstrate this complexity with 128 Sn and derive level correction factors, which can be used to relate fission product yields to discrete transition intensities, for several even-even nuclei.