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| This area provides access to a variety of nuclear data, including ENDF/B cross sections, radioactive decay data, astrophysics data, photoatomic data, charged particle data, thermal neutron data, a Map to the Nuclides, and a Nuclear Data Viewer. The data are useful for both nuclear science and nuclear engineering. |
| This is an index to the contents of the ENDF/B-VII library of evaluated incident-neutron data. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and PDF plots of the cross sections and distributions. ryxm@lanl.gov |
| This is an index to the contents of the ENDF/B-VII library of evaluated thermal neutron scattering data. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and PDF plots of the cross sections and distributions. ryxm@lanl.gov |
| This is an index to the contents of the ENDF/B-VII library of evaluated incident-proton data. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and PDF plots of the cross sections and distributions. ryxm@lanl.gov |
| This is an index to the contents of the ENDF/B-VII library of evaluated incident-gamma data. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and PDF plots of the cross sections and distributions. ryxm@lanl.gov |
| The NJOY/HEATR calculation of the energy-balance Kerma provides a sensitive test of the consistency between the energy available from E+Q and the energy emitted as secondary neutrons and photons. This area provides PDF graphs comparing the energy-balance Kerma and the photon energy production against kinematic limits. The summary gives rough ratings on the quality of the energy balance for the various nuclides of ENDF/B-VII and provides links to the plots. ryxm@lanl.gov |
| The Los Alamos (Madland-Nix) Model for the prompt fission neutron spectrum and average prompt fission neutron multiplicity is a widely used and substantiated model for the calculation of these quantities as a function of the fissioning nucleus for both neutron-induced and spontaneous fission. For neutron-induced fission, a fission spectrum matrix is calculated each vector of which is the spectrum for a given incident neutron energy that induces the fission. At high incident neutron energy, where fission following the emission of one or more neutrons is possible, the model takes into account the effects of and competition between first-, second-, and third-chance fission. The primary reference for the model is: D. G. Madland and J. R. Nix, Nucl. Sci. Eng. 81 (1982) 213-271. dgm@lanl.gov |
| This table contains evaluated kerma coefficients for neutron energies from thermal up to 150 MeV, for calculations of neutron energy deposition (Chadwick et al., Medical Physics 26, (1999) p.974, and ICRU Report "Nuclear Data for Neutron and Proton Radiotherapy and for Radiation Protection"). The results are based on the LA150 library (Release 6 of ENDF/B-VI), together with kerma predictions by NJOY below 20 MeV. mbchadwick@lanl.gov |
| This tool computes reaction Q-values and thresholds using experimental and theoretical nuclear masses. ryxm@lanl.gov |
| Nuclear astrophysics calculations of nucleosynthesis in stars or the Big Bang, stellar evolution, and super-nova dynamics require good nuclear cross section information and nuclear properties, such as masses and lifetimes, for a very large number of nuclides. This is an area to give the nuclear astrophysics community easy WWW access to such data from Los Alamos. It is part of the DOE Office of Science US Nuclear Data Program (USNDP), an effort to encourage a coordinated US effort in nuclear data for nuclear astrophysics and other research fields. ryxm@lanl.gov |
| This is a graphical interface to nuclear information presented as a set of maps of the known nuclides, much like the familiar Chart of the Nuclides. Click on the desired nuclide to see what data are available--this may include ENDF decay data, interpreted ENDF-VI evaluations, plots of cross sections, or Moller-Nix ground-state properties. ryxm@lanl.gov |
This is an interactive nuclear data viewer that you can use to
construct a variety of plots containing experimental data and
theoretical curves. The final graph is shipped to you as a
PostScript document or GIF image that can be displayed on your
screen or printed. It is also possible to request the numbers
used for the graph instead of the picture. The nuclear data
viewer currently gives you access to
formats
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| This is an index to the contents of the ENDF/B-VI library of evaluated neutron data as of Release 8. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and Postscript plots of the cross sections and distributions. ryxm@lanl.gov |
| This is an index to the contents of the ENDF/B-VI library of evaluated data for incident protons. The 150-MeV evaluations, which were first made available with Release 6, were developed for the APT project. Links in the index provide access to more information about the individual materials, including raw and interpreted views of the ENDF file, and Postscript plots of the cross sections and distributions. ryxm@lanl.gov |
| This link gives access to incident-deuteron data from ENDF/B-VI. These evaluations are useful for fusion studies. ryxm@lanl.gov |
| This link gives access to incident-triton data from ENDF/B-VI. These evaluations are useful for fusion studies. ryxm@lanl.gov |
| This link gives access to incident-3He data from ENDF/B-VI. These evaluations are useful for fusion studies. ryxm@lanl.gov |
| This area gives photon interaction data, electron interaction data, and atomic relaxation data in ENDF-6 format as converted from the LLNL epdl, eedl, and eadl libraries. These data were provided with Release 8. ryxm@lanl.gov |
| During the period 1994--2001, work at Los Alamos and work by the participants in an IAEA Coordinated Research Project on photonuclear data have resulted in a large number of evaluations, in the addition of capabilities to process photonuclear data to the NJOY Nuclear Data Processing System, and to capabilities to handle photonuclear reactions in the MCNP and MCNPX Monte Carlo transport codes. The laboratories that submitted evaluations are the Los Alamos National Laboratory (LANL), the Korean Atomic Energy Institute (KAERI), the Japanese Atomic Energy Institute (JAERI), the Chinese Nuclear Data Center (CNDC), and a collaboration between IPPE/Obninsk and CDFE/Moscow (the BOFOD library). This area contains an initial MCNP/MCNPX library for 188 evaluations (with more than one evaluation for a number of isotopes) for use in testing and validation of the new photonuclear capabilities. It also contains the subset of the IAEA evaluations that was able to be processed or could be modified to be processed with links for downloading or browsing the evaluations. Color Postscript plots of all the 188 evaluations are provided. Also see the IAEA Photonuclear Data Library. LA-UR-02-124. ryxm@lanl.gov |
| This is an index to the contents of the Japanese JENDL-3.2 library of evaluated neutron data. Links in the index provide access to raw and interpreted views of the ENDF-format file. ryxm@lanl.gov |
| This is an index to the contents of the Japanese JENDL-3.3 library of evaluated neutron data. Links in the index provide access to raw and interpreted views of the ENDF-format file. Under construction. ryxm@lanl.gov |
| This is an index to the contents of the European JEF-2.2 library of evaluated neutron data. Links in the index provide access to raw and interpreted views of the ENDF-format file. ryxm@lanl.gov |
| ryxm@lanl.gov |
| This is an index to the contents of the Russian (and FSU) BROND-2.2 library of evaluated neutron data. Links in the index provide access to raw and interpreted views of the ENDF-format file. ryxm@lanl.gov |
| This is an index to the contents of the Chinese CENDL-2 library of evaluated neutron data. Links in the index provide access to raw and interpreted views of the ENDF-format file. ryxm@lanl.gov |
| This area gives access to the original ENDF/B-VI thermal evaluations and to the new evaluations prepared for Release 3 (but actually distributed with Release 4) in both raw and interpreted forms. ryxm@lanl.gov |
| This gives you a page containing a list of all the 989 nuclides available. Selecting one of the nuclides gives you a new page containing details on the decay data for that nuclide, including decay modes and radioactivity spectra, as extracted from the ENDF/B-VI evaluation. ryxm@lanl.gov |
| This section contains Postsript plots of the photoatomic cross sections (multigroup total, absorption and heating; pointwise total, coherent, incoherent, pair production, and photoelectric) and the photon group-to-group scattering matrix for 99 elements. The evaluated data are from ENDF/B-VI and the multigroup averaging and plotting were performed using NJOY 94. For faster access through the network, the data are divided into groups of ten elements as follows: The page numbers in these files are equal to the Z for each element for convenient scanning on your workstation screen using ghostview. The lengths of the Postscript files range from 1.5 to 2 MB. The LANL 24-group structure has the following boundaries (MeV): |
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group range group range group range
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1 .010 - .030 9 .750 - 1.00 17 5.00 - 6.00
2 .030 - .060 10 1.00 - 1.33 18 6.00 - 7.00
3 .060 - .100 11 1.33 - 1.66 19 7.00 - 8.00
4 .100 - .200 12 1.66 - 2.00 20 7.00 - 8.00
5 .200 - .300 13 2.00 - 2.50 21 9.00 - 10.0
6 .300 - .500 14 2.50 - 3.00 22 10.0 - 12.0
7 .500 - .525 15 3.00 - 4.00 23 12.0 - 17.0
8 .525 - .750 16 4.00 - 5.00 24 17.0 - 30.0
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| These multigroup data are used in the MATXS11 80x24 fast-reactor/fusion library and the MATXS12 69x24 thermal library. For more information, see the TRANSX report. ryxm@lanl.gov |
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This is an index to the contents of the ENDF/B-V library of
evaluated neutron data through Release 2. Links in the index
provide access to more information about the individual
materials, including raw and interpreted views of the ENDF file,
and Postscript plots of the cross sections and distributions.
ryxm@lanl.gov
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26 June 2007
ryxm@lanl.gov