Nuclear Data Center

WWW Chart of the Nuclides 2010 is divided into 44 parts.
Click the numbers in the following sensitive figure, 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 compilation of experimental data until 2008 by H. Koura (JAEA), T. Tachibana (Waseda University), and J. Katakura (JAEA), beta-decay half-lives estimated, by T. Tachibana, 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 2010, compiled by T. Tachibana, H. Koura and J. Katakura, JNDC and Nuclear Data Center, JAEA (2010), is available now.

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-4.0.

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 2010 was created by using gd2.0.35 which was originally developed by Thomas Boutell and is now maintained by Pierre-A. Joye under the umbrella of

JavaScript ver. of the chart is available !
A new version of “WWW Chart of the Nuclides” which utilizes JavaScript is under development for the next distribution of the “Chart of the Nuclides”. This version is produced to improve operability and visualization from the present version above. On the new version, the chart can be slided in all directions by dragging and zoomed in/out by wheel rolling with a mouse like some web maps. A development (beta) version of the chart based on “WWW Chart of the Nuclides 2010” data is available now. Please try it from the left-hand link and let us know some problems, comments and demands.
[ About PC and browser ]
This version requires measurable PC performance and a browser which processes JavaScript fast and handles SVG image data. It requires at least about 300 MB free space of RAM on your PC, and please use a browser operating it comfortably refering to the list below.
Browser nameStatus
Google Chromeoperating comfortably (recommended)
Operaoperating comfortably (recommended)
Internet Explorer 10 or lateravailable
Internet Explorer 9available but not comfortable
Internet Explorer 8 or oldernot available
Mozilla Firefoxavailable but not comfortable
other browsersnot be tested

The Nuclide Map page placed various type of figures was created for reference.
In this page, figures were generated as nuclides matched the selected condition.
Nuclide Map

History of WWW Chart of the Nuclides 2010

New version was created.
Link to "Nuclide Map" was added.
JavaScript (beta) version of the “WWW Chart of the Nuclides” was distributed.

Modified at  2014/02/20 17:28 [JST]

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