[2A16-21] Uncertainty Quantification, Fission Product Yield and Decay Data

[2A16] Analysis of effects of cross section correlation of fissile nuclides on the uncertainty of systematic nuclear properties of benchmark by Total Monte Carlo method

*Haruka Hirano¹, Tsunenori Inakura¹, Naoki Yamano¹, Satoshi Chiba¹ (1. Tokyo Tech)

Keywords:nuclear data, Total Monte Carlo method , T6, uncertainty analysis

Effects of the correlation between cross section and angular distribution on the uncertainty of the reactor-physics quantities were investigated via an uncertainty analysis of the nuclear properties of GODIVA and FLATTOP by applying the total Monte Carlo method to nuclear data of 235U. Results of the MCNP calculations were statistically processed to obtain variances and correlations of the effective multiplication factors, number of fission and leakage neutrons. Influence of the correlations in nuclear data, which are not included in the standard ENDF-6 format, on the uncertainties of neutronic quantities was investigated.