The UNM Fission Spectrometer for Individual Fission Fragment Identification from ~(239)Pu and ~(235)U with Correlated A, Z, E, and Fission Tagged Gamma-Ray Data

摘要

Nuclear data needs call for measurement of high resolution fragment yields and energies for ~(239)Pu and ~(235)U fission. The Nuclear Energy Agency has begun to keep a list of high priority requests for data relating to nuclear energy applications, at https://www.oecd-nea.org/dbdata/hprl. This includes prompt gammas from ~(239)Pu and ~(235)U fission. LANL partners have also expressed the need for quasi-prompt gammas for studying fission daughter isomers, while quasi-prompt gammas from fission parent isomers are important to understanding pre-fission nuclear shapes for theory. To approach these data needs we will use the existing UNM Fission Spectrometer and a stand-alone Ionization Chamber for fission tagging, coupling both with gamma ray spectroscopy. This will provide prompt and delayed fission gamma data, which can be correlated with individual fission products.