CODE | NUCLIDE | ORIGINAL DATA TAKEN FROM | MODIFICATION | ADDITIONAL FILE MODIFICATIONS | ORIGINAL DATA TAKEN FROM | MODIFICATION | ADDITIONAL FILE MODIFICATIONS | COMMENTS |
1088223 | 088_Ra_223 | JENDL-3.3 | Covariance data removed except of those for total (MF/MT=33/1) that were judged to be of high quality (M. Herman). Covariances - BNL, July, 2011: Covariances were adopted from COMMARA-2.0, where BNL performed new evaluation of covariances in the full energy range in 2010. In thermal and resolved resonance region we made use of the covariance formalism based on kernel approximation along with data in the Atlas of Neutron Resonances. Elastic scattering uncertainty was largely determined by potential scattering contribution via the uncertainty of the scattering radius R'. In fast neutron region up to 20 MeV covariance estimates were produced using the nuclear reaction code EMPIRE and the Bayesian code KALMAN. The KALMAN code along with selected experimental data was used to determine the correlation matrix of the model parameters. Furthermore, additional parameters scaling total and absorption cross section were included to prevent the unrealistic drop in the cross-section uncertainties and, in some cases, to cover spread of experimental data. The elastic cross-section uncertainties were computed as difference of total and absorption reaction channel. |
JENDL-3.2 data were automatically transformed to JENDL-3.3. Interpolation of spectra: 22 (unit base interpolation) (3,251) deleted, T-matrix of (4,2) deleted, and others. |