THE JEFF-3.0 NUCLEAR DATA LIBRARY

The JEFF-3 nuclear data file project is briefly presented. The JEFF-3.0 General Purpose library, which was released in April 2002, is described in some detail. This library contains neutron cross section evaluated files for 340 nuclides in standard ENDF-6 format. It is intended to be used for various neutron transport applications in the 0 to 20 MeV energy range. The main differences with respect to JEF-2.2, the previous library produced by the JEF project, are outlined. The improvements to be expected from this new JEFF-3.0 library are discussed. Finally, information regarding the preparation and future release of the JEFF-3 Special Purpose files is provided.