NIST Atomic Spectra Database

Other names: ASD, NIST Standard Reference Database 78, Spectral Data for the Chandra X-Ray Observatory (former database / discontinued)

The Atomic Spectra Database (ASD) contains data for radiative transitions and energy levels in atoms and atomic ions. Data are included for observed transitions and energy levels of most of the known chemical elements. ASD contains data on spectral lines with wavelengths from about 20 pm (picometers) to 60 m (meters). For many lines, ASD includes radiative transition probabilities. The energy level data include the ground states and ionization energies for all spectra. For most spectra, wavelengths, transition-probabilities, relative intensities, and energy levels are integrated, so that all the available information for a given transition is incorporated under a single listing. For classified lines, in addition to the observed wavelength, ASD includes the Ritz wavelength, which is the wavelength derived from the energy levels.

Webpage:
https://www.nist.gov/pml/atomic-spectra-database

Licence:
Name: NIST Database Disclaimer
URL: https://www.nist.gov/pml/database-disclaimer

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radiation actinium aluminium aluminum americium antimony argon arsenic astatine atom atomic atomic physics atomic property atomic spectroscopy atomic-ions barium berkelium beryllium bismuth bohrium boron bromine cadmium calcium californium carbon cerium cesium chandra chlorine chromium cobalt columbium copernicium copper curium darmstadtium database deuterium doubly-charged dubnium dysprosium einsteinium element energy levels erbium europium fermium flerovium fluorine francium gadolinium gallium germanium gold ground states hafnium hassium helium holmium hydrogen indium iodine ionization potentials ionization-energies ionization-limits ionized spectra ionized-atoms iridium iron krypton kurchatovium lanthanum lawrencium lead line classifications lithium livermorium lutetium magnesium manganese meitnerium mendelevium mercury mg molybdenum multiply-charged ne neodymium neon neptunium neutral nickel niobium nitrogen nobelium observatory osmium oxygen palladium phosphorus physical reference data physical sciences platinum plutonium polonium potassium praseodymium promethium protactinium quadruply-charged radium radon rhenium rhodium roentgenium rubidium ruthenium rutherfordium s samarium scandium seaborgium selenium si silicium silicon silver singly-charged sodium spectra spectral lines spectroscopy spectrum strontium sulfur sulphur tantalum technetium tellurium terbium thallium thorium thulium tin titanium transition probabilities triply-charged tritium tungsten ununbium ununhexium ununoctium ununpentium ununquadium ununseptium ununtrium unununium uranium vanadium wavelengths x-ray xenon ytterbium yttrium zinc zirconium

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