Carbon dioxide ion dissociations after inner shell excitation and ionization: The origin of site-specific effects

Journal Article · Wed May 14 00:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4872218· OSTI ID:22252881

Eland, J. H. D. ^[1]; Zagorodskikh, S.; Mucke, M. ^[2]; Squibb, R. J.; Sorensen, S. L. ^[3]

---

1. Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ (United Kingdom)
2. Department of Physics and Astronomy, Uppsala University, 751 20 Uppsala (Sweden)
3. Division of Synchrotron Radiation Research, Lund University, 221 00 Lund (Sweden)

Multi-coincidence experiments with detection of both electrons and ions from decay of core-excited and core-ionized states of CO{sub 2} confirm that O{sub 2}{sup +} is formed specifically in Auger decay from the C1s-π* and O1s-π* resonances. Molecular rearrangement occurs by bending in the resonant states, and O{sub 2}{sup +} is produced by both single and double Auger decay. It is suggested that electron capture by C{sup +} after partial dissociation in the doubly ionized core of excited CO{sub 2}{sup +}, formed by shake-up in spectator resonant Auger decay, accounts for high kinetic energy and high internal energy in some C + O{sub 2}{sup +} fragments.

• OSTI ID: 22252881
• Journal Information: Journal of Chemical Physics, Vol. 140, Issue 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON DIOXIDE
DETECTION
DISSOCIATION
ELECTRON CAPTURE
ELECTRONS
INNER-SHELL EXCITATION
KINETIC ENERGY