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.