Observation and Interpretation of the Auger Electron Spectrum from Clean Beryllium

Auger electron peaks at 92 and 104 eV have been observed in the derivative dN(E)/dE of the secondary-electron energy distribution $N(E)$ from clean polycrystalline beryllium. Existence of these two Auger transitions can be explained in terms of conduction-band electrons with s character and p character and is consistent with theoretical calculations. The observed Auger transitions can be expressed as $1s2s2s$ (92 eV) and $1s2p2p$ (104 eV).