Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Critical Compilation of Atomic Wavelength and Energy Level Data



William C. Martin, J Sugar, Arlene Musgrove, Craig J. Sansonetti, Jean E. Sansonetti, Edward B. Saloman, V I. Azarov, Alexander Kramida, A N. Ryabtsev, T Shirai


The Atomic Energy Levels Data Center at the National Institute of Standards and Technology (NIST), in cooperation with other laboratories indicated above, is critically evaluating and compiling energy levels, wavelengths, and energy level classifications of atomic spectral lines. Much of this work is concentrated on spectra of the first 30 elements, which is the region of the periodic table of greatest astrophysical interest. The AEL Data Center is a part of the Atomic Spectroscopy Group at NIST. This group has for many years been an important contributor of atomic spectroscopic data for astrophysical applications. We made the accurate measurements of the platinum hollow-cathode spectrum used for wavelength calibration of the Goddard High-Resolution Spectrograph and the Space Telescope Imaging Spectrograph [1]. More recent examples include our extensive measurements and energy level analyses of heavy element spectra for interpretation of spectra of CP stars, especially chi Lupi (see paper by C.J. Sansonetti and J. Reader, these proceedings). The AEL Data Center monitors the literature on atomic spectra and maintains computer-accessible bibliographic files. Since 1979 we have also written seven Reports on Atomic Spectra giving extensive references to laboratory research of special interest for astronomers. [Trans. IAU XVII through XXIII, 1979-1997; see Report of Commission 14].
Proceedings Title
Proceedings of Laboratory Space Science Workshop, Harvard-Smithsonian Center for Astrophysics
Conference Dates
April 1-3, 1998
Conference Title
Laboratory Space Science Workshop


atomic data, atomic energy levels, atomic spectra, atomic wavelengths, data compilation, data evaluation, laboratory astrophysics, optical spectra, ultraviolet spectra


Martin, W. , Sugar, J. , Musgrove, A. , Sansonetti, C. , Sansonetti, J. , Saloman, E. , Azarov, V. , Kramida, A. , Ryabtsev, A. and Shirai, T. (1998), Critical Compilation of Atomic Wavelength and Energy Level Data, Proceedings of Laboratory Space Science Workshop, Harvard-Smithsonian Center for Astrophysics (Accessed June 21, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created April 1, 1998, Updated August 10, 2018