Validation of the fission yield and decay data libraries with the 10 s-delayed 235U fission γ-ray energy spectrum

Abstract We have measured with a LaCl 3 detector the γ -ray spectrum emitted by a 235 U enriched UO 2 fuel rod 10 s after being irradiated with thermal neutrons. The experimental results are compared with simulations performed with the fission product yield and radioactive decay data libraries present in the most recent releases of ENDF/B, JEFF and JENDL.