![[skip navigation]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/Images/dot_t.gif)
NIST Atomic Spectra Database
Disclaimer
The National Institute of Standards and Technology (NIST) uses its best efforts to
deliver a high quality copy of the Database and to verify that the data contained
therein have been selected on the basis of sound scientific judgement. However,
NIST makes no warranties to that effect, and NIST shall not be liable for any
damage that may result from errors or omissions in the Database.
Online: March 1999
![[ASD Home]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/ASD-sm.gif){kind=small}
![[Lines Query]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/Lines.gif){kind=small}
![[Levels Query]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/Levels.gif){kind=small}
![[List of Spectra]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/List.gif){kind=small}
![[Ground States and Ionization Energies]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/GS-IE.gif){kind=small}
![[Bibliography]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/Bib.gif){kind=small}
![[Help]](https://webarchive.library.unt.edu/eot2008/20090118102026im_/http://www.physics.nist.gov/PhysRefData/ASD/Images/Help.gif){kind=small}
