Joint Evaluated Fission and Fusion (JEFF) Library version 4.0 test 3
Welcome to the official release of the JEFF-4T3 library!
After our initial unofficial release in September 2023, we are thrilled to announce that JEFF-4T3 is now officially available as of February 2024. This release marks a significant milestone in our continuous efforts to provide accurate and reliable nuclear data to the scientific community.
For a comprehensive overview of the changes introduced in JEFF-4T3, we invite you to refer to this spreadsheet: JEFF-4 Evolution. It provides detailed insights into the modifications made.
Warning
Please note that this is a test library that has not been approved for formal release. The latest official release remains JEFF-3.3.
Fission Yields (FY)
Please be aware that only the conservative approach has been retained, and that the normalization error in fission yields has been addressed.
Each evaluation contains 4 files: - the FY evaluation in the ENDF6 format - the cumulative FY correlation matrix - the independent FY correlation matrix - a file describing how to read and use the correlation matrices
| Release | Format | Content | # files | Download |
|---|---|---|---|---|
| JEFF-4T3 | ENDF6 | Thermal fission of U-235 | 4 | Download |
| JEFF-4T3 | ENDF6 | Thermal fission of Pu-239 | 4 | Download |
Thermal Scattering Law (TSL)
JEFF-4T3 takes TSL from JEFF-3.3, with the exception of: - H in H2O: new evaluation by José Ignacio Marquez Damian - U in UO2 and O in UO2: new evaluation by Gilles Noguère (already available in JEFF-4T1) - Pu in PuO2 and O in PuO2: new evaluation by Gilles Noguère (already available in JEFF-4T1) - H and C in CH2 (Polyethylene): provided by ORNL - H and C in C8H8 (Polystyrene): provided by ORNL - H, C, and O in C5O2H8 (Lucite): provided by ORNL
| Release | Format | Content | # files | Download |
|---|---|---|---|---|
| JEFF-4T3 | ENDF6 | Thermal Scattering Law Evaluations (download all) | 29 | Download |
| JEFF-4T3 | ENDF6 | Thermal Scattering Law Evaluations (choose and download) | 29 | Link |
Neutron induced cross section evaluations
Changes compared to JEFF-4T2.2: - F-19, Si-28, Si-29, Si-30, Fe-56, Cu-63, Cu-65 are from INDEN - Eight-groups delayed neutron data were restored from JEFF-3.3 for Th-227, Th-229, U-232, U-236, Np-238, Pu-242, Am-242m, Am-243, Cf-249, Cf-251 - The gamma decay cascade for inelastic scattering (MF12 and MF14) was completed whenever necessary - B-9 and Be-10 are taken from TENDL-2023, as they were missing in previous versions of JEFF - New evaluations for Ar-36,38, V-51, Xe-124,126,128-132,134,136, Pm-147, Bi-209, U-235,236,238, Np-238, Pu-239,240,241 - All TENDL-2021 files have been replaced with the latest TENDL-2023 data, with the exception of Np-237 - All JENDL-4 files have been replaced with the latest JENDL-5 data - Minor typos and format issues were corrected
For a comprehensive overview of the changes, please refer to the following spreadsheet: JEFF-4 Evolution.
| Release | Format | Code | Content | # files | Download |
|---|---|---|---|---|---|
| JEFF-4T3 | ENDF6 | - | Cross section evaluations (download all) | 567 | Download |
| JEFF-4T3 | ENDF6 | - | Cross section evaluations (choose and download) | 567 | Link |
| JEFF-4T3 | ACE | NJOY2016.56 | Continuous-energy cross section data | 567 | Download |
| JEFF-4T3 | Text | - | XSDIR for MCNP | 1 | Download |
| JEFF-4T3 | GENDF-1102 | NJOY2016.56 and PREPRO2021 | Groupwise cross section data | 567 | Download |
| JEFF-4T3 | HDF5 | NJOY2016.56 and OPENMC | Continuous-energy cross section data | 567 | Download |
| JEFF-4T3 | XML | FUDGE-6.2.0 | Cross section evaluations + covariance data | 967 | Download |
| JEFF-4T3 | XML | FUDGE-6.2.0 | List of files for which the FUDGE processing failed | 1 | Download |
| JEFF-4T3 | NJOY2016.56 and PREPRO2021 | Plots (choose and download) | 1701 | Link | |
| JEFF-4T3 | Excel | NEA Pipeline | Status of the pipeline for each isotope | 1 | Download |