The spectrum of Mg4+ was observed between 95 and 400 Å. New wavelengths result in revised-energy level values and some resolved term structure. Parametric calculations with configuration interaction were made for the 2s2p5, 2s22p33s, and 2s22p33d configurations. These support rejection of some levels and some new identifications.
© 1980 Optical Society of America
Victor Kaufman and Marie-Christine Artru, "Wavelengths and energy levels of quadruply ionized magnesium (Mg V)," J. Opt. Soc. Am. 70, 1135-1139 (1980)