Current Status of Atomic Spectroscopy Databases at NIST

NIST's Atomic Spectroscopy Group maintains several online databases that can be accessed via https://www.nist.gov/pml/atomic-spectroscopy-databases. Our main Atomic Spectra Database (ASD), now v. 5.5.2, contains critically evaluated data for \textgreater 270,000 spectral lines and 111,000 energy levels of almost all elements in the periodic table. Several thousand spectral lines and energy levels of C I, Cu II, V I-II, Y V, Sn III, Pt VI-VIII have been added. Most of these additions are important for astrophysics, technology, and fusion research. A new LIBS interface to ASD is designed for modeling laser-induced breakdown plasma spectra. The Grotrian diagram interface has been re-implemented with enhanced interactive features. We continue weekly updates of our bibliography databases ensuring comprehensive coverage of current literature on atomic spectra. Our other popular databases, such as the Handbook of Basic Atomic Spectroscopy Data, searchable atlases of spectra of Pt-Ne and Th-Ar lamps, and non-LTE plasma-kinetics code simulations, continue to be maintained. The Th-Ar spectrum atlas has been redesigned implementing interactive plots and tables.