The IAEA Atomic and Molecular Data Unit stores and maintains recommended and critically assessed (evaluated) numerical databases of atomic and molecular (A+M) collisional and radiative properties (cross sections, spectroscopic data), particle-surface interactions (PSI) processes (such as physical sputtering, erosion, etc.) and bulk material properties (e.g. thermomechanical properties, particle diffusion, retention, etc.). The ALADDIN formatted numerical databases (called also ALADDIN database) and the entire Bibliographic Database (AMBDAS) constitute the factual content of AMDIS.
The attribute "recommended" means that the data information contained in the respective database has been considered as the best available at the moment of its recommendation for use in fusion research (and for other applications). The recommendation is usually made by a group of experts, by the A+M Data Center Network and by the IFRC A+M Subcommittee.
Evaluated databases are collections of data critically assessed by individual experts or group of experts, but have not passed the more stringent procedure of "recommendation" by a broader expert body.
Bibliographic and numerical data may be searched using the AMDIS system via Internet interfaces for both numerical and bibliographic data. In addition, a search engine allows the user to search other databases for additional data.
