Inner-shell double ionization and chemical bonding II. Satellite lines

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Abstract
A theoretical study has been made of the satellite x-ray lines in sulphur which lie on the high-energy side of the strong Kα1,2 lines. It is shown that a satisfactory account of the Kα3,4 group of these lines (αprime, α3, α3prime, α4) can be given in terms of transitions K-1L-1 -> L-2 involving double ionization of inner shells. Not only is the observed sequence of these lines correctly predicted, but it is also shown, in agreement with experiment, that the satellite lines should be much more sensitive to chemical bonding of the emitting atom than are the parent Kα1,2 lines, and that they should move as a group, with mutual separations nearly independent of oxidation number in the emitter. High oxidation numbers will be associated with larger transition energies.