Anion and Cation Formation Following Core-level Photoexcitation of CO2

Authors

Gunnar Ohrwall, MAX-lab, Lund UniversityFollow
M. M. Sant'Anna, Lawrence Berkeley National LaboratoryFollow
Wayne C. Stolte, University of Nevada, Las VegasFollow
I. Dominguez-Lopez, Centro National de Metrologia
L.T. N. Dang, University of Nevada, Las VegasFollow
Alfred S. Schlachter, Lawrence Berkeley National LaboratoryFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

10-2002

Publication Title

Journal of Physics B: Atomic, Molecular and Optical Physics

Volume

35

Issue

21

First page number:

4543

Last page number:

4552

Abstract

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 O⁻ fragments 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.

Keywords

Anions; Atomic orbitals; Carbon dioxide; Electronic excitation; Fragmentation reactions

Disciplines

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

Language

English

Permissions

Use Find in Your Library, contact the author, or use interlibrary loan to garner a copy of the article. Publisher copyright policy allows author to archive post-print (author’s final manuscript). When post-print is available or publisher policy changes, the article will be deposited

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.

Repository Citation

Ohrwall, G., Sant'Anna, M. M., Stolte, W. C., Dominguez-Lopez, I., Dang, L. N., Schlachter, A. S., Lindle, D. W. (2002). Anion and Cation Formation Following Core-level Photoexcitation of CO2. Journal of Physics B: Atomic, Molecular and Optical Physics, 35(21), 4543-4552.