Nuclear structure and decay data for thousands of isotopes and isomers-a new update of the definitive reference.

The 1999 Table of Isotopes set features:
* Nuclear structure and radioactive decay data for approximately 3, 700 isotopes and isomers-an increase of more than 100 since the 1998 Update.
* Up-to-date mass chain information, with more than 10% revised material.
* The latest versions as of December 1998 of the Evaluated Nuclear Structure Data File (ENSDF) and Nuclear Science Reference (NSR) file.
* Additional data from several evaluation sources, including The Table of Superdeformed Nuclear Bands and Fission Isomers.
* Updated isotope summary table as well as energy-ordered gamma ray and alpha particle tables.
* Updated appendices for elemental data, nuclear charts, and gamma ray energy standards.
* Adoption of the 1997 IUPAC recommended heavy element names.
* More than 25, 000 references.
* Convenient links to additional atomic mass, nuclear astrophysics rates, spontaneous fission, thermal neutron capture, and more.