Since the initial launch in 1997, AMODS (Atomic, Molecular, and Optical Database Systems) in KAERI has been evolved to contain many aspects in atomic spectroscopy and collision process research areas. It is now recognized as the primary AMO database in Korea and is in service worldwide in the scientific communities requiring atomic and molecular (AM) data such as atomic structure and transition probabilities, electron impact excitation and ionization cross sections, and real-time execution of AM data codes such as population dynamics, ALADDIN, and so on. AMODS is a member data center of IAEA International Data Center Network.
As to the atomic spectroscopic data, comprehensive atomic spectral lines of almost all the elements of the periodic table are compiled in user friendly ways as ASL (Atomic Spectral Lines) sub-database. A script to extract the multiphoton excitation paths (such as for Grotrian diagram) of the elements is also provided with the data being derived from that ASL.
MCDF program code is also compiled in AMODS with lecture notes and videos and can be executed on-line for real time calculation. Script for real time calculation of electron impact ionization cross sections based on BEB (Binary-Encountered-Bathe) model with parameters supplied by the output of MCDF calculation will be provided in a near future. Currently experimental electron impact excitation/ionization cross sections for oxygen molecule and some other molecules are compiled.
International collaboration regarding AM data has been pursued towards the completion of AMODS. AMODS has become a mirror site of NIST ASD database and KAERI has been a member of ADAS consortium. KAERI has been working with NIFS for auto-ionization levels and dielectronic satellite lines, establishing a joint DB of them.
Experimental data on isotope shifts and hyperfine structures of some lanthanide elements obtained from the high resolution resonance ionization spectroscopy are compiled in AMODS. Population dynamics (on-line) calculation code based on the density matrix formalism is provided to allow the theoretical analysis of the population transfer in a three-level atomic system.