By combining multiple electron coincidence detection with ionization by synchrotron radiation, we have obtained resolved spectra of the OCS3+ ion created through the double Auger effect. The form of the spectra depends critically on the identity of the atom bearing the initial hole. High and intermediate level electron structure calculations lead to an assignment of the resolved spectrum from ionization via the S 2p hole. From the analysis it appears that the double Auger effect from closed shell molecules favors formation of doublet states over quartet states. Molecular field effects in the double Auger effect are similar to those in the single Auger effect in linear molecules.

Topics
Ligand fields, Complete-active space self-consistent field, Correlation-consistent basis sets, Potential energy surfaces, Photoionization, Synchrotron radiation, Mass spectrometry, Auger effect, Auger electron spectroscopy, Photoelectron spectroscopy
© 2010 American Institute of Physics.
2010
American Institute of Physics
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