Deexcitation electron spectroscopy of core-excited CO2: Comparison of experiment with theory

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Abstract
The electron–electron coincidence technique has been used to measure the spectra of autoionizing (Auger) electrons that are emitted following excitation of carbon and oxygen 1s electrons in CO2 to the 2πu orbital. The experimental spectra are compared with theoretical calculations of Porwol et al. Agreement between theory and experiment is not good, in contrast to the situation for the photoionization spectrum, where there is good agreement. Possible causes for discrepancies are discussed.