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.

Extension of the resonance line series of Mg III



C M. Brown, Alexander Kramida, Uri Feldman, Joseph Reader


Spectra of Mg emitted by a Penning discharge were recorded in the extreme ultraviolet (EUV) on a 10.7-m grazing-incidence spectrograph with phosphor image plates. The spectra provided nine new lines of Mg III between 156 and 166 Å and allowed us to improve previous wavelength measurements for another seven lines in this spectral region.
Physica Scripta


Atomic spectra, line identification, energy levels, extreme ultraviolet, wavelengths, doubly ionized magnesium


Brown, C. , Kramida, A. , Feldman, U. and Reader, J. (2009), Extension of the resonance line series of Mg III, Physica Scripta, [online],, (Accessed May 26, 2024)


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

Created December 1, 2009, Updated April 7, 2024