JEFF-3.2 Evaluated Data: neutron data

The JEFF-3.2 nuclear data library, released in 2014 under the Joint Evaluated Fission and Fusion (JEFF) Project, provides a comprehensive set of evaluated neutron cross-section data for reactor design, safety analysis, and advanced nuclear applications. Covering over 400 isotopes, JEFF-3.2 incorporates the latest experimental results and theoretical evaluations to deliver consistent, high-quality data for both fission and fusion energy systems. This library has been widely adopted across Europe and internationally, serving as a reference standard for criticality safety, shielding, fuel cycle studies, and benchmark validation.