Ivo Kodeli: Experience with Cross Section Processing Using ERRORR Module

Comparison of the EFF-3 cross section covariance matrices processed using the modules ERRORR/NJOY and ANGELO (part of the ZZ-VITAMIN-J/COVA package) will be presented, indicating a possible problem in ERRORR in case of covariance matrix processing for threshold reactions. ERRORR seems to unphysically reduce the standard deviation in the user energy group containing the threshold when the corresponding lower energy group boundary extends below the threshold energy (averaging problem?).

Recent EFF-3 covariance data include few non-standard MT numbers. Patches for NJOY modules GROUPR, ERRORR and COVR were prepared (at present only for NJOY-97 version) which allow to process these data.

Last reviewed: 27 May 2011