Systematic Quantification of Uncertainties for Evaluated Prompt Fission Neutron Spectra and Multiplicities
1 Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
2 Department of Nuclear Engineering, University of New Mexico, USA
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Uncertainties associated with evaluated average prompt fission neutron spectra and multiplicities are obtained for a suite of actinides in the Los Alamos model formalism. Systematics for the model input parameters are taken from the literature and used as prior values in a Bayesian updating procedure. Posterior systematics as well as associated posterior uncertainties are inferred. In addition, cross-isotope correlations are evaluated for the first time. The quantification of uncertainties associated with advanced Monte Carlo Hauser-Feshbach calculations of prompt fission neutron spectra is also discussed.
© Owned by the authors, published by EDP Sciences, 2012