Douglas H. Sampson

Electron impact excitation cross sections for complex ions. III. Highly charged ions with three valence electrons

The electron impact collision strengths for several types of transitions of interest in highly charged ions with three valence electrons are expressed in a simple way in terms of scaled collision strengths for hydrogenic ions and helium-like ions with Z = infinity. Among applications of interest for these results are electron impact excitation of x-ray lines of lithium-like ions observed as satellites of the lines of highly charged helium-like ions.