Version History & Citation Information  |  Disclaimer
Help for Users with Text Browsers

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:

---

Additional information about the database may be obtained through the following links:

---

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. The Atomic Energy Levels Data Center and Data Center on Atomic Transition Probabilities and Line Shapes have carried out these critical compilations. Both Data Centers are located in the Physics Laboratory at the National Institute of Standards and Technology (NIST).

---

^©1979, 1980, 1981, 1982, 1983, 1985, 1988, 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2005, 2006, 2007, 2008 - 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
Online: March 1995 - Last update: April 2008

---

This database was funded [in part] by the Office of Fusion Energy Sciences of the U.S. Department of Energy, by the National Aeronautics and Space Administration, by NIST's Standard Reference Data Program (SRDP), and by NIST's Systems Integration for Manufacturing Applications (SIMA) Program.