Excitation of Auto-Ionizing Levels in Neon by Ion Impact

Auto-ionizing states of neutral and singly ionized neon were produced by bombarding neon gas with ${\mathrm{H}}^{+}$, ${\mathrm{He}}^{+}$, and ${\mathrm{Ne}}^{+}$ ions in the 150-250-keV energy range. Sixty lines in the electron spectrum were found, of which 43 have been classified into 13 Rydberg series. Ten of these series were previously unreported. Auger electrons from one- and two-vacancy states are also reported. Relative intensities of all transitions are listed.