International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07260

ENEA-Bologna production and testing of JEFF-3.1 multi-group cross section libraries for nuclear fission applications

Massimo Pescarini¹, Valentin Sinitsa^{2, 3} and Valentin Sinitsa<sup>1

1</sup>  ENEA, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente, Centro Ricerche "E. Clementel" Bologna, 40129 Bologna, Italy
²  ENEA consultant, formerly at SSC RF IPPE, State Scientific Center of the Russian Federation, Institute for Physics and Power Engineering, Obninsk, Russian Federation
³  ENEA, Centro Ricerche "E. Clementel" Bologna, 40129 Bologna, Italy

massimo.pescarini@bologna.enea.it

Published online: 21 May 2008

Abstract
The ENEA-Bologna Nuclear Data Group produced the JEFF-3.1 VITJEFF31.BOLIB and MATJEFF31. BOLIB fine-group coupled neutron and photon (199 n + 42 γ) cross section libraries for nuclear fission applications, respectively in AMPX and MATXS format, with the same specifications and energy group structure of the ENDF/B-VI.3 VITAMIN-B6 American library. Each library, containing 181 nuclide cross section files, was generated from the same set of cross section data files in GENDF format, obtained through the Bondarenko (f-factor) method, with an ENEA-Bologna revised version of the GROUPR module of the NJOY-99.160 system. Collapsed working libraries of self-shielded cross sections in FIDO-ANISN format, used by the deterministic transport codes of the DANTSYS and DOORS systems, can be generated from VITJEFF31.BOLIB and MATJEFF31.BOLIB through, respectively, further data processing with an ENEA-Bologna revised version of the SCAMPI system and with the TRANSX code. This paper describes the methodology and specifications of the data processing performed and presents some results of the VITJEFF31.BOLIB validation.

© CEA 2008