U.S. Nuclear Data Program

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Subject View


     Like all scientific disciplines, the field of nuclear data is broken up into a number of subdisciplines by history and the interests of the scientists who work in the field. The two large subdivisions are nuclear structure and nuclear reactions, but there are many cross connections between them. Each of these major fields contains a number of smaller subject fields, and these subjects are also interconnected. On this page, we provide links to a few of the classical subject fields of nuclear science. The data, data browsers, viewers, and articles that you will find under each subject were provided by the participants in the USNDP. We also provide links to assets outside of our network, if they are the primary source of information or provide a different view of the data. In some cases, there are several ways offered to do similar things; we hope that you will find an approach that matches your needs.
     If you are unable to find the type of data you need on this page, please give us feedback.
Index
Atomic Masses & Nuclear Deformations Nuclear Astrophysics
Nuclear Reaction Data Nuclear Structure & Decay Data

Atomic Masses & Nuclear Deformations
The masses of the nuclei are the fundamental measure of how protons and neutrons are bound together to form the matter in the universe, and they tell how much energy is released or used in nuclear reactions or released in nuclear decay. Many nuclear masses have been measured over the years, and models have been developed to attempt to calculate those that have not or cannot be measured. Here are some assets that you can use:
Atomic Mass Data Center
Atomic Mass Evaluation
JAERI Nuclear Data Center
Chart of the Nuclides 1996
KAERI Nuclear Data Evaluation Lab
Table of the Nuclides
National Nuclear Data Center
Atomic Mass Evaluation
Atomic Masses, Q-values, and Threshold Energies
T-2 Nuclear Information Service
Ground-state masses and deformations
Q-value calculator
WWW Table of Isotopes
Atomic Mass Data
Q-value calculator

Nuclear Astrophysics
Nuclear astrophysics involves study of the synthesis of elements and the evolution of cosmic sites where such syntheses occur. Systems as diverse as the early universe, the interstellar medium, red giant stars, and supernova explosions are currently the focus of intense studies utilizing sophisticated computer models -- models which require large quantities of nuclear data as input. Measurements in the nuclear laboratory form the empirical foundation for the current models of element synthesis. In addition to the more general information listed under Atomic Masses & Nuclear Deformations, Nuclear Reaction Data, and Nuclear Structure & Decay Data, some of the specialized information sources for this discipline are:
Charged Particle
Reaction Data:
T-2 Nuclear Information Service
Charged Particle Data
See also Evaluated and Experimental Nuclear Reaction Data.
Atomic Masses
& Structure Data:
T-2 Nuclear Information Service
Nuclear Properties for Astrophysics
See also Atomic Masses & Nuclear Deformations and Nuclear Structure & Decay Data.
References:
LBNL Nuclear Astrophysics Data
Nuclear Data References for Nuclear Astrophysics
ORNL Astrophysics Program
Nuclear Astrophysics Bibliography
Thermonuclear
Reaction Rates
& Astrophysical
S-Factors:
LBNL Nuclear Astrophysics Data
Nuclear Astrophysics Reaction Rates
NACRE - European Compilation of Reaction Rates for Astrophysics
ORNL Astrophysics Program
Caughlan and Fowler 1988 THERMONUCLEAR REACTION RATES
New Reaction Rates For Big Bang Nucleosynthesis
NEW REACTION RATES: 14O(alpha,p)17F and 17F(p,gamma)18Ne
Reaction Rate Update Information
T-2 Nuclear Information Service
Nuclear Astrophysics Data
See also Experimental Nuclear Reaction Data.

Nuclear Reaction Data
Bibliographies: The most fundamental task of any data effort is the establishment of a well-organized and complete bibliographic database covering the subject. In the area of nuclear reaction data there are three such systems: the Computer Index to Neutron Data (CINDA), the Nuclear Science References File (NSR), and the Photonuclear Data Index. These may be accessed from the following sites:
Centre for Photonuclear Experiments Data
Photonuclear Data Index
NEA Data Bank Nuclear Data Services
CINDA
National Nuclear Data Center
CINDA
NSR
WWW Table of Isotopes
The Isotope Explorer NSR Server
CINDA is maintained by a world-wide network of Nuclear Reaction Centers who compile, exchange, and distribute the information. Primary scanning responsibility for NSR resides at the National Nuclear Data Center with contributions from other members of the IAEA-sponsored Nuclear Structure and Decay Data Network. The Photonuclear Data Index is a combination of the CDFE Photonuclear Data Index and the JAERI Bibliographic Index to Photonuclear Reaction Data .
Evaluated Nuclear
Reaction Data:
The cross sections for nuclear reactions, along with their associated distributions for secondary particles in energy and angle, are normally evaluated by combining experimental data with nuclear models, converted to a standard world-wide format called ENDF (Evaluated Nuclear Data File), and made available in standard libraries through national or international nuclear data committees.

Most of the information contained in these libraries are for neutron-induced reactions but there are also data for photon and light charged-particle projectiles (p, d, t, 3He, and alpha) and photon interaction, decay data, and fission product yields libraries. The typical energy limit for projectiles is 20 MeV; however, some libraries extend to about 200 MeV.

The following download links, data browsers, and data viewers are provided to give you alternate convenient methods of access to these evaluated data:
IAEA's Nuclear Data Centre
Charged-particle cross section database for medical radioisotope production - Diagnostic radioiostopes and monitor reactions
FENDL-2 - Fusion Evaluated Nuclear Data Library, Version 2.0
IRDF-90 Version 2 - The International Reactor Dosimetry File
IAEA Photonuclear Data Library - Cross sections and spectra up to 140 MeV
RIPL-2 - References Input Parameter Library for theoretical calculations of nuclear reactions
JAERI Nuclear Data Center
Chart of the Nuclides 1996
Cross-Section Graphs of JENDL-3.2
KAERI Nuclear Data Evaluation Lab
ENDFPLOT: online graph plot for neutron cross sections
Table of the Nuclides
NEA Data Bank Nuclear Data Services
EVA (password required)
National Nuclear Data Center
ENDF
IRDF-90 Version 2 - The International Reactor Dosimetry File
T-2 Nuclear Information Service
Nuclear Data Viewer
Files: Standard and interpreted data and PostScript plots for the following evaluated nuclear data libraries: ENDF/B-VI (USA), JENDL-3.2 (Japan), JEF-2.2 (Europe), BROND-2.2 (Russia), CENDL-2 (China)
See also JEF-PC under Useful Programs,...
The primary depository for the US national data files is at the National Nuclear Data Center, Brookhaven National Laboratory.
Experimental Nuclear
Reaction Data:
The main database for experimental nuclear reaction data is CSISRS/EXFOR. The data in this system are compiled, exchanged, and distributed by a world-wide network of Nuclear Reaction Data Centers. Information in this database is essentially complete for neutron-induced reactions and rapidly growing for charged-particle- and photon-induced reactions. Access to these data is available from:
Centre for Photonuclear Experiments Data
Photonuclear Reaction Cross Sections, Parameters of the Giant Dipole Resonance & Photonuclear Reaction Thresholds
NEA Data Bank Nuclear Data Services
EVA (password required)
National Nuclear Data Center
Experimental Nuclear Reaction Data File
T-2 Nuclear Information Service
Nuclear Data Viewer
See also JEF-PC under Useful Programs,...
High-energy Nuclear
Reaction Data
(E<=150 MeV):
In addition to the high-energy data contained in the standard evaluated libraries, additional cross section libraries are being developed for various applications. These libraries may be accessed at:
T-2 Nuclear Information Service
High-Energy Data for Accelerator Applications
Neutron Capture Data,
Thermal Scattering,
& Resonance Integrals:
Several specialized compilations or evaluations of neutron capture cross sections and other capture data have been performed. Among those available on the World Wide Web are:
IAEA Nuclear Data Section
NGATLAS - Atlas of Neutron Capture Cross Sections
National Nuclear Data Center
Thermal Neutron Capture Gamma-rays
T-2 Nuclear Information Service
ENDF/B-VI Thermal Scattering Data
WWW Table of Isotopes
Thermal Neutron Capture Data
See also PCNuDat under Useful Programs,...
Useful Programs
& Client & Helper
Applications:
Members of the US Nuclear Data Program and other national and international networks have developed programs to aid in their work and to provide easy access to the data disseminated by the networks to other users. Some of the programs available are:
NEA Data Bank Nuclear Data Services
JEF-PC - A personal computer program for viewing evaluated and experimental data
National Nuclear Data Center
ENDF Utility Codes - Comparing, checking, listing, plotting, etc. data in the ENDF format
Nuclear Model Codes - Programs using nuclear reaction theory models to calculate cross sections, etc.
PCNuDat - MS-DOS clone of NuDat
Radiation Safety Information Computational Center
RSICC Software - A large warehouse of programs and related data libraries
T-2 Nuclear Information Service
Codes Available from the Nuclear Information Service - TRANSX, NJOY, etc.

Nuclear Structure & Decay Data
Bibliographies: The most fundamental task of any data effort is the establishment of a well-organized and complete bibliographic database covering the subject. In the area of nuclear structure data the primary resource is the Nuclear Science References File (NSR) which may be accessed from the following sites:
National Nuclear Data Center
NSR
WWW Table of Isotopes
The Isotope Explorer NSR Server
Primary scanning responsibility for NSR resides at the National Nuclear Data Center with contributions from other members of the IAEA-sponsored Nuclear Structure and Decay Data Network.
Evaluated Nuclear Structure & Decay
Data:
Experimental data relevant to nuclear level and gamma properties and nuclear decay are evaluated by participating members of the IAEA-sponsored Nuclear Structure and Decay Data Network and distributed in a standard world-wide format called ENSDF (Evaluated Nuclear Structure Data File). For A>40, ENSDF is used to publish these evaluations in the Nuclear Data Sheets. Data for A<41 are translated into ENSDF from evaluations published in Nuclear Physics.
National Nuclear Data Center
Evaluated Nuclear Structure Data File (ENSDF) Note: Isotope Explorer may be used as a helper application to view the data retrieved.
See also Isotope Explorer and JEF-PC under Useful Programs,...
ENSDF is maintained and distributed by the National Nuclear Data Center on behalf of the IAEA-sponsored Nuclear Structure and Decay Data Network.
Experimental Nuclear Structure & Decay
Data:
XUNDL - Experimental Unevaluated Nuclear Data List. XUNDL (formerly called UNSDF) consists of experimental, unevaluated, nuclear structure data compiled in the Evaluated Nuclear Structure Data File (ENSDF) format.
Ground- & Metastable-state properties: Several compact sources of ground- and metastable-state properties are available. The data in these are generally extracted from ENSDF, supplemented with other information such as the Atomic Mass Evaluation, and, sometimes, have some additional evaluation done. Some of the data files and browsers available are:
Atomic Mass Data Center
jvNuBase
JAERI Nuclear Data Center
Chart of the Nuclides 1996
KAERI Nuclear Data Evaluation Lab
Table of the Nuclides
National Nuclear Data Center
Nuclear Wallet Cards
Wallet Cards module of NuDat
WWW Table of Isotopes
Chart of Nuclides Ordered by Element
The Lund/LBNL Nuclear Data Search
See also Nucleus and PCNuDat under Useful Programs,...
High-spin & Superdeformation: Special compilations and evaluations of high-spin bands and superdeformed bands and fission isomers are performed. The results of this work are incorporated into the master ENSDF database as rapidly as possible but some of the data may be more current than ENSDF.
National Nuclear Data Center
Table of Magnetic Dipole Rotational Bands
Table of Superdeformed Nuclear Bands and Fission Isomers
WWW Table of Isotopes
High-spin and Nuclear Structure Data
Also available at http://radware.phy.ornl.gov/rw/nd.html are about 3300 level schemes in the RadWare ASCII-gls format, mostly converted from ENSDF. Level schemes in the RadWare ASCII-gls format may be submitted to this site for distribution. See also RadWare under Useful Programs,...
Level & Radiation Properties: Various views of adopted level and radiation properties extracted from ENSDF and other sources are available. Among these are:
National Nuclear Data Center
Adopted Levels and Gammas modules of NuDat
TUNL Nuclear Data Project
Publications of the TUNL Nuclear Data Group
Energy Level Diagrams for A = 4 - 20 Nuclei
Table of Isotopes for A=1-20 Nuclides
WWW Table of Isotopes
The Lund/LBNL Nuclear Data Search
See also PCNuDat under Useful Programs,...
Nuclear
Moments:
Evaluations of nuclear moments available include:
National Nuclear Data Center
Table of New Nuclear Moments (Preprint)
KAERI Nuclear Data Evaluation Lab
Table of the Nuclides
WWW Table of Isotopes
Table of Isotopes, 8th Edition Appendix E: Nuclear Moments (PostScript, PDF)
Radioactive
Decay Data:
The data files and browsers listed here contain radioactive decay data extracted from ENSDF which has been further processed to include the atomic radiations associated with nuclear decay. In some cases, these have been further supplemented with theory where there is no or incomplete experimental.
National Nuclear Data Center
Nuclear Decay Data in the MIRD Format
Decay Radiations module of NuDat
T-2 Nuclear Information Service
Map of the Nuclides
ENDF/B-VI Decay Data
WWW Table of Isotopes
The Lund/LBNL Nuclear Data Search
Radioactive Decay Data
See also JEF-PC and PCNuDat under Useful Programs,...
Thermal
Neutron Data:
Several specialized compilations or evaluations of thermal neutron capture data have been performed. Among those available on the World Wide Web are:
National Nuclear Data Center
Thermal Neutron Capture Gamma-rays
WWW Table of Isotopes
Thermal Neutron Capture Data
See also PCNuDat under Useful Programs,...
Useful Programs
& Client & Helper
Applications:
Members of the US Nuclear Data Program and other national and international networks have developed programs to aid in their work and to provide easy access to the data disseminated by the networks to other users. Some of the programs available are:
Atomic Mass Data Center
Nucleus - mass, isomeric excitation energy, half-life, spin, parity, and decay modes and branching ratios.
NEA Data Bank Nuclear Data Services
JEF-PC - A personal computer program for viewing evaluated and experimental data
National Nuclear Data Center
ENSDF Analysis and Utility Codes - Calculate log ft's, internal conversion coeffients, etc., and check or manipulate data in the ENSDF format.
ENSDAT Produces PostScript drawings and tables of nuclear structure data from ENSDF files
ENSWin Produces a window display which can be printed with the Windows print drivers.
PCNuDat - MS-DOS clone of NuDat
RadWare
RadWare is a software package for the interactive graphical analysis of gamma-ray coincidence data.
WWW Table of Isotopes
Isotope Explorer - Interactively search and display nuclear structure and decay data and retrieve literature references. ENSDF data in the ENSDF/2 format at LBNL may be directly accessed by the program or it may be configured as a helper application to view ENSDF data from other sites.
Isotopes Project Computer Code Library - Isotope Explorer, Chartist (produces charts of nuclides), ENDIT (ENSDF file line editor), and FCONV (converts between the ENSDF, ENSDF/2, and LVL formats)
X-ray & gamma-ray
Standards
IAEA-TECDOC-619 Evaluated Data (XG Standards) - Recommended values of decay parameters of many common radionuclides routinely used for X-ray and gamma-ray detector efficiency calibration.

January 30, 2004 (TWB)