Nuclear data are available from direct measurements (published in the scientific literature) or from compilations of measurements. There can be differences between compilations depending on the evaluation procedures used and the availability of results from measurements at the time the compilation was put together. Several organisations worldwide are currently involved in nuclear data evaluations.

Nuclear Data Enquiry Service

If you require nuclear data for a particular application and are unsure of where to obtain reliable values, please use this service by completing the form below. In most cases the service is free of charge, supported by UK Government as part of the National Measurement System. A separate arrangement can be made if lengthy evaluation studies or experimental measurements are needed. Although every effort will be made to answer your enquiry, it may be necessary to refer you to nuclear data experts at other organisations.

Contact: Nigel Hawkes

Use of NEA Databank facilities

The NEA Databank offers free-of-charge access to Nuclear Reaction Data and Nuclear Structure Data. Full details of the services can be found here

The Databank also collects and distributes a range of computer programs for cross section calculations, reactor fuel management, radiological safety etc. This service is available here

Nuclear Data Links

• OECD Nuclear Energy Agency (NEA) Data Bank
  Nuclear data libraries (JEFF-3.1, ENDF/B-VI, JENDL-3, etc.), computer programs, meetings, conferences
• International Atomic Energy Agency (IAEA), Nuclear Data Section
  Nuclear databases and files, newsletter, workshops
• National Nuclear Data Center, Brookhaven National Laboratory
  Nuclear databases and files (ENSDF, Nuclear Science References, etc.), NuDat database, meetings
• Lund/LBNL Nuclear Data Search
  Table of Radioactive Isotopes, Table of Isotopes
• target="_blank"Decay Data Evaluation Project
  Evaluated radionuclide decay schemes
• European Activation System (EASY-2007)
  Nuclear data and code for neutron and charged particle activation calculations
• American Nuclear Society

Nuclear Data forums

• Working Party on International Nuclear Data Evaluation Co-operation (WPEC)
  Promotes exchange of information on nuclear data evaluations, measurements, calculations, etc
• Nuclear Spectrometry Users' Forum (NPL)
• Ionising Radiation Metrology Forum (NPL)
• Neutron Users' Club (NPL)

Nuclear facilities

• Imperial College Reactor Centre, Silwood Park (CONSORT)
  A unique reactor facility for isotope production and research
• NPL Radioactivity Measurement Services
• NPL Neutron Measurement Services

Nuclear Data Publications

• Decay Data of the Transactinium Nuclides, Technical Report Series No. 261, IAEA, Vienna, 1986, ISBN 92-0-135086-4
• Curves and Tables of Neutron Cross Sections, INDC(JPN)-140/L, JAERI, 1990
• JEF-2.2 Radioactive Decay Data, JEF Report 13, NEA, 1994
• Table of Simple Integral Neutron Cross Section Data from JEF-2.2, ENDF/B-VI, JENDL-3.2, BROND-2 and CENDL-2, JEF Report 14, NEA, 1994
• Table of Isotopes, 8^th Edition, John Wiley & Sons Inc., Volume I: A=1-150, ISBN 0-471-07730-5, Volume II: A=151-272, ISBN 0-471-14917-9, 1996
• The Radiochemical Manual, AEA Technology plc, 1998,ISBN 0-7058-1768-7
• Table of Radionuclides, CEA-Saclay, 1999, ISBN 2-7272-0200-8
• Table of Radionuclides – Comments on Evaluations, CEA-Saclay, 1999, ISBN 2-7272-0211-3. (Note that evaluations completed after publication of these reports can be accessed via the Decay Data Evaluation Project webpage)
• Nuclear Data Sheets – These are prepared from the Evaluated Nuclear Structure Data File (ENSDF), a computer file maintained by the National Nuclear Data Center (see above) on behalf of the International Network for Nuclear Structure and Decay Data Evaluations. Nuclear Data Sheets are published by Academic Press, ISSN 0090-3752