Near threshold ionization effects in the Ge L 2 M 2,3 M 4,5 and L 2 M 4,5 M 4,5 Auger spectra of volatile germanium compounds

The proximity of the L2 (2p1/2) ionization potential in germanium compounds to the MgKα radiation energy introduces threshold ionization effects in the Ge LMM Auger spectra derived from this level. The spectra of GeH4, Ge(CH3)4, Ge(C2H5)4, GeF4, and GeCl4 excited with MgKα radiation are compared with those excited with AlKα radiation and post-collision interaction (PCI) and spectator satellite effects induced are analyzed. Comparison of L2,3M2,3M4,5 and L2,3M4,5M4,5 spectra reveal a final state dependence of the satellite shifts.