High-resolution study of Ne Kα x-ray transitions as a function of oxygen-projectile charge state

Kα transitions of neon are resolved, with a curved-crystal spectrometer, into eight components corresponding to varying amounts of multiple L-shell ionization. The degree of multiple L-shell ionization of neon increases with an increase of the projectile charge state of 30-MeV oxygen ions. The change in the neon satellite structure for the O⁺⁷ case as compared to the O⁴⁸ case (bare nuclear charge) is substantial. An effective fluorescence yield is extracted from the data and agrees with a recent value obtained from poor-resolution Auger-electron and x-ray measurements.