The Joint Evaluated Fission and Fusion File (JEFF) is an evaluated library produced via an international collaboration of NEA Data Bank participating countries.

JEFF-3.3 is a thorough update of the neutron, decay data, fission yields, dpa and neutron activation libraries in the EAF format, with neutron thermal scattering files for 20 compounds. Special sub-libraries for incident alphas, deuterons, gammas, helium-3, protons and tritons have been contributed by the TENDL-2017 library and adopted as part of the JEFF-3.3 release. JEFF-3.3 was officially released on November 20, 2017.

Recent updates

  • [December, 2019]: JEFF-3.3.1 Activation file The update labeled JEFF-3.3.1 version of the activation data library in EAF format is now fully consistent with TENDL-2017. All cross-sections included in the activation data library were extracted and processed from TENDL-2017 and successfully benchmarked with CCFE’s V&V suite. They are released in the two EAF energy group structures : 2011 and 709 groups, for all isotopes available in the TENDL library. The previous JEFF-3.3 (pointwise) version, included cross-sections from pure TALYS calculations for the following nuclides: \(^{1,2,3}H\), \(^{3,4}He\), \(^{6,7}Li\), \(^{10,11}B\), \(^9Be\), \(^{12,13}C\), \(^{14,15}N\), \(^{16,17}O\), \(^{19}F\), \(^{232}Th\), \(^{233,235,238}U\) and \(^{239}Pu\).


Downloads


Neutrons


Release Format Type Content Modified Size Download
Evaluated files
JEFF-3.3 ENDF-6 Neutron 562 incident neutron isotopic evaluations 2018-01-09 15:39 448M
JEFF-3.3 ENDF-6 Neutron TSL 20 evaluations for 20 compounds
More info...
2017-12-18 15:30 34M
Processed files
JEFF-3.3 ACE Neutron CE, 293K 2018-12-10 14:52 1.2G
JEFF-3.3 ACE Neutron CE, 600K 2018-12-10 15:05 1.2G
JEFF-3.3 ACE Neutron CE, 900K 2018-12-10 15:11 1.1G
JEFF-3.3 ACE Neutron CE, 1200K 2018-12-12 12:08 1.1G
JEFF-3.3 ACE Neutron CE, 1500K 2018-12-10 15:42 1.1G
JEFF-3.3 ACE Neutron CE,1800K 2018-12-10 16:07 1.1G
JEFF-3.3 ACE Neutron TSL CE, All Temperatures available
More info...
2018-12-10 14:30 884M
XSDIR files
JEFF-3.3 XSDIR XSDIR file For all temperatures above and TSLs 2019-02-15 14:19 262K
Neutron activation files
JEFF-3.3 EAF Neutron activation 2797 files 2018-3-26 16:58 275M
JEFF-3.3 EAF Neutron activation covariance Files 2797 files 2018-3-26 16:57 9.8M
JEFF-3.3.1 PENDF Neutron activation Pointwise, All TENDL isotopes 2020-03-17 11:34 296 Mb
JEFF-3.3.1 EAF Neutron activation 211g, All TENDL isotopes 2019-12-11 11:40 55M
JEFF-3.3.1 EAF Neutron activation 211g, Subset of EAF isotopes only 2019-12-11 11:40 13M
JEFF-3.3.1 EAF Neutron activation 709g, All TENDL isotopes 2019-12-11 11:40 85M
JEFF-3.3.1 EAF Neutron activation 709g, Subset of EAF isotopes only 2019-12-11 11:40 20M





Decay Data




Fission Yields




Alpha




Deuteron




DPA




Gamma




He-3




Proton



NDEC analysis

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