This page contains data provided by the Atomic Mass Data Center,
located at the Institute of Modern Physics, Chinese Academy of Sciences (IMP), Lanzhou, China.
Please refer to that web-site for further information about AME and NUBASE.
Atomic Mass Evaluation - AME2012The evaluation has been published in Chinese Physics C 36 (2012) 1287-1602 (PDF), 1603-2014 (PDF).
The four main ASCII files of AME2012 are
- mass.mas12 - masses
- rct1.mas12 - reaction energies, table 1
- rct2.mas12 - reaction energies, table 2
- covariance.covar - Variances and Covariances of primary nuclides
Any work that will use these files should make reference to these paper and not to the electronic files.
A Q-Value Calculator is available, using AME2012 masses.
LiveChart presents AME2012 data in a tabular way.
Nubase Evaluation - Nubase2012The evaluation has been published in Chinese Physics C 36 (2012) 1157-1286 (PDF).
NUBASE contains experimentaly known nuclear properties, and some that have been estimated from extrapolation, for 3827 nuclides: mass, isomeric excitation energy, half-life, spin, parity, decay modes and intensities.
An electric ASCII file of the NUBASE table, for use with computer programs, can be downloaded.
- nubase.mas12 - Nubase table
Any work that will use the file should make reference to these paper and not to the electronic files.