Abstract
We present the first observation of optical transitions between doubly excited doublet states in the term systems N V, O VI and F VII. The spectra were produced by foil excitation of fast ion beams. The assignment of the spectral lines was made by comparison with the results of MCDF calculations along the isoelectronic sequence. The same method also led to the identification of two 3d – 4f quartet transitions in Mg X.
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Blanke, J.H., Fricke, B., Heinemann, D. et al. Study of 3d – 4f and 3d – 5f quartet and doublet transitions of doubly excited three-electron ions. Z Phys D - Atoms, Molecules and Clusters 13, 1–7 (1989). https://doi.org/10.1007/BF01437336
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DOI: https://doi.org/10.1007/BF01437336