Spectra of aluminum and magnesium emitted from a Penning ionization discharge have been recorded in the XUV range by 2-m grazing-incidence spectrometer. Autoionizing satellite lines, originating from transitions between core excited levels lying in the continuum and ground or lowest excited states of the Na I-like Al III and Mg II, have been classified. Their implication for ionization cross-section estimates and XUV laser research is discussed.
© 1988 Optical Society of America
M. Finkenthal, A. Litman, P. Mandelbaum, D. Stutman, and J. L. Schwob, "High-resolution autoionizing line spectra of Mg II and Al III in the 160–260-Å range emitted from a Penning ionization discharge plasma," J. Opt. Soc. Am. B 5, 1640-1644 (1988)