Auger Electron Emission Spectra from Foil and Gas Excited Carbon Beams
Auger electron emission spectra from 2 MeV C+ ions excited by collisions with thin carbon foils and Ne gas are presented. The similarity of qualitative features for the C+ → C (foil) and C+ → Ne spectra indicates the similarity of ionization mechanisms for beam foil and beam gas excitation. The spectra were normalized to the lowest lying Li-like quartet state (1s 2s 2p) 4po in carbon by comparison with time delayed foil excited electron decay-in-flight spectra. Comparison to Hartree Fock calculated transition energies indicates that transitions in three and four electron carbon ions dominate the prompt spectra.
KeywordsAuger Electron Carbon Foil Collision Region Lower Energy Peak Carbon Beam
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