The Lund/LBNL Nuclear Data Search

S.Y.F. Chu1, L.P. Ekström1,2 and R.B. Firestone1

1 LBNL, Berkeley, USA
2 Department of Physics, Lund University, Sweden

The handbook Table of Isotopes  has for many years been the most widely used source of information for nuclear structure and decay data. Please refer to this link for information about the book, the CD-ROM and also additional tables and information on nuclear data. This service is intended to give convenient Web access to the Table of Isotopes  data.

At present only part of the decay data is implemented, but the service will eventually include search facilities, table generators, charts and drawings of all nuclear structure and decay data in the ToI book.

Features of the system

  • All known g-ray and a-particle energies from radioactive decay are searchable with a number of criteria
  • Properties of all known nuclides and isomeric states can be retrieved
  • Radiation listings (sortable on energy, intensity and decay mode) of
    • g-rays
    • a-particles
  • Summary drawings for mass chains A=1-272 in PDF format (Adobe Acrobat Reader plug-in required)
  • ENSDF evaluation citation
  • Automatically generated search for post-deadline decay references
  • Primary references of decay data sets
Reference keynumbers are automatically decoded from the Nuclear Science References database facility IE NSR Web server, which is available both in Lund and Berkeley.

Usage hints

  • Stable nuclides are given a half life of 1e+35 s. If you want to exclude stable nuclides in a search, you can enter 1e+34 s as an upper limit.

Technical details

Microsoft Internet Information Server (IIS 3.0) running under Windows NT 4.0 on a 200 MHz Pentium Pro with 128 Mbyte memory. The data are stored in a Microsoft Access database, and the connection between the database and the Web server is Open DataBase Connectivity (ODBC). Output pages can be produced in a flexible way (high data awareness) by means of Active Server Pages (ASP).

References to the data

Unless explicitly specified, data are from the Evaluated Nuclear Structure File (ENSDF). ENSDF is updated and maintained by the National Nuclear Data Center (NNDC) at BNL. References to ENSDF evaluations (published in Nuclear Data Sheets) are given in the main table of the respective nuclide. This ENSDF citation can be used as a reference to data. Alternatively the general reference to ToI on the WWW can be used.

Masses, Q-values and nucleon separation energies
The 1995 update to the atomic mass evaluation, G. Audi and A.H. Wapstra, Nuclear Physics A595 (1995) 409-480

Nuclear data search