K-K charge transfer and electron emission for 0.13-MeV/uF8++Ne collisions

We have measured the impact-parameter dependence P(b) of Ne K-Auger- and δ-electron production for 0.23- and 0.13-MeV/u ${\mathrm{F}}^{8+}$+Ne collisions. For the higher energy an improved agreement with multiple-state atomic expansion theory has been found compared to previous data. A strong damping in the oscillatory structure of the P(b) which appears at the smaller collision energy shows a significant discrepancy of experiment and theory. For δ-electron production it is shown that dominant contributions arise from very distant collisions greater than or equal to 0.4 a.u.