Return to Top Page


WWW Chart of the Nuclides 2004 is divided into 29 parts. Click the numbers in the following sensitive fig, or enter an atomic number (or symbol) and a mass number of a nuclide and . ( )

"WWW Chart of the Nuclides" here is based on the most recent compilation of experimental data by T.Horiguchi (Hiroshima International University) (2004), beta-decay half-lives estimated, by T.Tachibana (Waseda University) (2000), with the Gross Theory [T.Tachibana, M.Yamada, Proc. Int. Conf on exotic nuclei and atomic masses, Arles, 1995, p.763], and alpha-decay half-lives based on the reference of V.E.Vola, Jr. and G.T.Seaborg, J. Inorg. Nucl. Chems, 28, 741 (1966) and newly adjusted parameter values.

A printed version of "Chart of the Nuclides 2004", compiled by T.Horiguchi, T. Tachibana, H.Koura and J.Katakura, JNDC and Nuclear Data Center, JAERI (2005), is available.

In this WWW chart of the nuclides, a decay mode of ground state is indicated with decay mode pattern. A half-life of each nuclide is shown with color codes and numerical values. For the nuclides which have an isomer with a half-life longer than its ground state, the half-life of the isomer is shown in the chart. In such cases, a small rectangule is displayed at the right top corner. The color of the small rectangule is corresponding to the half-life of the ground state.

By clicking a box of each nuclide, information on the nuclide is shown, which contains spin and half-life, mass, strong gamma-rays from nuclear decay, decay data, and links to figures and tables of cross-section data stored in Japanese evaluated nuclear data library JENDL-3.3.

When a box of atomic numbers located at the left side is clicked, an isotope list of corresponding element is displayed.

"WWW Chart of the Nuclides 2004" was created by using gd1.1.1 which was developed by Thomas Boutell of the Quest Protein Database Center, Cold Spring Harbor Labs, USA.

History of WWW Chart of the Nuclides 2004

2005/01/14
New version was created.
2005/02/14
Modified to show decay energies.
2005/04/12
Above explanation and charts were slightly modified.
2005/10/20
Information on spin and half-life shown in each nuclide page was modified. @
2006/02/21
Modified to show links to evaluated data libraries.

Nuclear Data Center, Japan Atomic Energy Agency (JAEA)
Modified at 2006/02/21 10:05 JST

Contact: J. Katakura
Return to Top Page