Covariance matrices for ENDF/B-VII 235,238U and 239Pu evaluated files in the fast energy rangeP. Talou1, 2, T. Kawano1 and P.G. Young1
1 T-16, Nuclear Physics, Los Alamos National Laboratory, USA
2 DEN/DER/SPRC/Laboratoire d'Études de Physique, CEA, France
Published online: 21 May 2008
Covariance matrices for evaluated ENDF/B-VII files of 235,238U and 239Pu are obtained in the fast energy region. Both differential experimental data and theoretical model calculations are used to estimate the uncertainties and correlations associated with the evaluated cross sections. The results are compiled in the ENDF format for covariance matrices, and processed into multi-group files for applications.
© CEA 2008