Note: For the most recent values, go to ASD version 3.0. This database Version 1.3 is retained for archival purposes only and will not be updated. Version 3.0 of this database was released February 2005. Expansions and improvements of the database have added data and references for many important spectra not previously included. Enhancements include improved versatility in both the selection and presentation of the data and new graphical capabilities.
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Version 1.3 of ASD is maintained as an archive. The database was transferred from "aeldata.nist.gov" to "physics.nist.gov." "aeldata.nist.gov" now resides behind the NIST firewall and is no longer accessible to the public. At relocation time, the interface was redesigned to allow for easier access to the data. Also, the data tables were reformatted to save screen space making them easier to view. Holdings numbers were also updated.
Si I energy levels from "Energy Levels of Silicon, Si I through Si XIV," W. C. Martin and R. Zalubas, J. Phys. Chem. Ref. Data 12, 323-380 (1983) are now available.
Si I energy levels are at present unavailable.
Si I energy levels contained in the database through 12 March 1998 were from unpublished measurements and data compiled at NIST (1993), which updated the published NIST energy level compilation, Energy Levels of Silicon, Si I through Si XIV, W. C. Martin and R. Zalubas, J. Phys. Chem. Ref. Data 12, 323-380 (1983).
Pending completion and publication of the 1993 work, the Si I energy levels will revert back to the published data in the next release.
References, ground states, and ionization energies have been added for all spectra for which other data are included. New energy level data have been added for Zn I-XXX and new wavelength data have been added for Fe I.
Official release, NIST approved version. Includes most of the existing recent critically evaluated NIST data on atomic energy levels, transition probabilities, and wavelengths. Energy level data are included for over 500 spectra for the elements Na through S, K through Ni, Cu, Ge, Kr, and Mo, La through Lu, and O II. Transition probability data are included for Sc through Ni. Wavelength data are included for O II, Mg, Al, S, and Sc.
Unofficial release. Includes most of the existing recent critically evaluated NIST data on atomic energy levels, transition probabilities, and wavelengths. Energy level data are included for over 500 spectra for the elements Na through S, K through Ni, Cu, Ge, Kr, and Mo, La through Lu, and O II. Transition probability data are included for Sc through Ni. Wavelength data are included for O II, Mg, Al, S, and Sc.
