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Evidence for atomic processes in molecular valence double ionization

Evidence for atomic processes in molecular valence double ionization Complete molecular valence-electron spectra were measured for CO. Unexpectedly, discrete lines at low kinetic energies were found, superimposed on a continuous energy spectrum representing direct double-ionization processes. The appearance of these lines is discussed in the context of the formation of the C + + O + ion pair near its associated threshold at 38.4 eV. It is ascribed to valence-excited repulsive ( CO + ) * states, which dissociate to a large part rapidly into atomic fragments before electronic relaxation takes place. From our spectra, partial cross sections for the different processes leading to dissociative valence double ionization are derived. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review A American Physical Society (APS)

Evidence for atomic processes in molecular valence double ionization

Physical Review A , Volume 45 (3) – Feb 1, 1992
4 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1992 The American Physical Society
ISSN
1094-1622
DOI
10.1103/PhysRevA.45.R1295
Publisher site
See Article on Publisher Site

Abstract

Complete molecular valence-electron spectra were measured for CO. Unexpectedly, discrete lines at low kinetic energies were found, superimposed on a continuous energy spectrum representing direct double-ionization processes. The appearance of these lines is discussed in the context of the formation of the C + + O + ion pair near its associated threshold at 38.4 eV. It is ascribed to valence-excited repulsive ( CO + ) * states, which dissociate to a large part rapidly into atomic fragments before electronic relaxation takes place. From our spectra, partial cross sections for the different processes leading to dissociative valence double ionization are derived.

Journal

Physical Review AAmerican Physical Society (APS)

Published: Feb 1, 1992

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