Anion and cation formation following core-level photoexcitation of CO2

Document Type



Mass-resolved anion and cation partial-yield spectra following photoexcitation of CO2 have been recorded in the vicinity of the C 1s and O 1s thresholds. Anion production was found to be site specific: a weak production of O was observed on the π resonance near the C K edge, whereas both C and Ofragments were observed near the O K edge. Due to suppression of the shape resonances that dominate the cross section above the core thresholds, the anion-partialyield spectra at the O K edge reveal several previously unobserved electronic states. In addition, several cations such as CO2+ and O+2 were observed for the first time.


Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Physical Chemistry


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Publisher Citation

Öhrwall, Gunnar, M. M. Sant’Anna, Wayne C. Stolte, I. Dominguez-Lopez, L. T. N. Dang, A. S. Schlachter, and Dennis W. Lindle. "Anion and cation formation following core-level photoexcitation of CO2." Journal of Physics B: Atomic, Molecular and Optical Physics 35, no. 21 (2002): 4543.