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
Alock () orhttps:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
https://www.nist.gov/pml/atomic-spectra-database
Connect with us
Atomic Spectra Database
NIST Standard Reference Database 78
Version 5.12
Last Update to Data Content: November 2024 |Version History & Citation Information | Disclaimer | DOI: https://dx.doi.org/10.18434/T4W30F
Welcome to the NIST Atomic Spectra Database, NIST Standard Reference Database #78. The spectroscopic data may be selected and displayed according to wavelengths or energy levels by choosing one of the following options:
Spectral lines and associated energy levels displayed in wavelength order with all selected spectra intermixed or in multiplet order. Transition probabilities for the lines are also displayed where available.
Energy levels of a particular atom or ion displayed in order of energy above the ground state.
Ground states and ionization energies of atoms and atomic ions.
ASD Interface for Laser Induced Breakdown Spectroscopy (LIBS)
Additional information about the database may be obtained through the following links:
Atomic Spectroscopy Intro - Outlines basic atomic physics concepts, explains terminology and notation.
ASD Intro & Contents - Introduction to and contents of the Atomic Spectra Database.
Bibliography - Bibliography of data sources used for this database.
Help - On-line help in using the database.
This database provides access and search capability for NIST critically evaluated data on atomic energy levels, wavelengths, and transition probabilities that are reasonably up-to-date. TheAtomic Spectroscopy Data Center has carried out thesecritical compilations. The Data Center is located in thePhysical Measurement Laboratory at theNational Institute of Standards and Technology (NIST).
NIST ASD Team
Principal Developers (Currently Active):
Alexander Kramida, Yuri Ralchenko
Data Compilers (Currently Active):
Alexander Kramida, Joseph Reader, Yuri Ralchenko
Database Developers (Currently Active):
Alexander Kramida, Karen Olsen, Rodrigo Ibacache, Yuri Ralchenko
Students contributing to data entry:
Eric Carpentier, Thomas Carpentier, Amy Zimmerman, Adrian Hamins-Puertolas, Marko Hamins-Puertolas, Anna Sharova, Genevieve Tan
Past Contributors:
Edward B. Saloman, Haris Kunari, Jean E. Sansonetti, Jeffrey R. Fuhr, Larissa I. Podobedova, Wolfgang L. Wiese, John J. Curry, Gerry R. Dalton, Robert Dragoset, Fun-Chen (Jesse) Jou, William C. Martin, Peter J. Mohr, Arlene Musgrove, Craig J. Sansonetti, Gloria Wiersma
©1979, 1980, 1981, 1982, 1983, 1985, 1988, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2005, 2006, 2007, 2008, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 - copyright by the U.S. Department of Commerce on behalf of the United States. All rights reserved. NIST reserves the right to charge for these data in the future.
NIST Standard Reference Database 78
data [at]nist.gov (Customer Support)
Online: March 1995 -Last update: November 2024
This database was funded [in part] by theOffice of Fusion Energy Sciences of the U.S. Department of Energy, by theNational Aeronautics and Space Administration, by NIST'sStandard Reference Data Program (SRDP), and by NIST's SMA Program.
Contacts
- (301) 975-3210