CODE | NUCLIDE | ORIGINAL DATA TAKEN FROM | MODIFICATION | ADDITIONAL FILE MODIFICATIONS | ORIGINAL DATA TAKEN FROM | MODIFICATION | ADDITIONAL FILE MODIFICATIONS | COMMENTS |
1092238 | 092_U_238 | ENDF/B-VI.8 | MOD 3C - ADOPT JENDL-3.3 RESONANCE PARAMETERS AND MINOR ADJUSTMENT OF (N,F) CROSS SECTION BELOW 4 MeV. [3-06-2009] 1. We replaced the resolved and unresolved resonance parameters with the parameters from the JENDL-3.3 evaluation/1/. We modified the unresolved resonace parameters slightly to maintain the ENDF/B-VII.0 unresolved energy cutoff of 0.01 MeV and to join with the smooth cross sections above 0.01 MeV. 2. We adjusted the (n,f) cross section between 0.01 and 4 MeV to give a higher cross section in the 1-2 MeV range, consistent with systematics by Behrens/2/, and to smoothly join with the cross section at the unresolved resonance region cutoff. REFERENCES /1/ T. Nakagawa, JENDL-3.3 evaluation (2002). /2/ J. Behrens, NSE,63,250,1977 |