Absorption spectroscopy; Electron energy levels; Electron energy loss spectroscopy; Electron transitions; Ionization; Light absorption; Chlorine dioxide; Dissociative electron attachment (DEA) method; Chlorine compounds
Abstract :
[en] The spectroscopy of chlorine dioxide, OClO, has been investigated using the techniques of dissociative electron attachment (DEA), near-threshold electron energy loss (EEL, 0-10 eV) and optical absorption (2.5-10.8 eV). Mass and energy analyses of the ions formed in the DEA processes show that at energies above about 3 eV, the product ions are predominantly near-thermal Cl-, suggesting that the accompanying oxygen atoms are excited electronically. All features observed in the EEL experiments are in regions of optical absorption, indicating that the optically dark doublet and quartet states have energies which overlap optically allowed transitions. The optical spectrum itself is in good qualitative agreement with previous measurements, but there are differences in relative absorption cross sections. Alternative interpretations of some spectral features are proposed.
Disciplines :
Chemistry
Author, co-author :
Marston, G.; Department of Chemistry, University of Reading, Whiteknights, Reading RG6 2AD, United Kingdom
Walker, I. C.; Department of Chemistry, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
Mason, N. J.; Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
Gingell, J. M.; Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
Zhao, H.; Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
Brown, K. L.; Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
Tollet, Françoise ; Université de Liège > Direction administrative de la faculté des sciences
Delwiche, Jacques ; Université de Liège > Relations académiques et scientifiques (Sciences)
Siggel, M. R. F.; Daresbury Laboratory, Warrington, Cheshire WA4 4AD, United Kingdom
Language :
English
Title :
Photoabsorption and near-threshold electron energy-loss spectroscopy of OClO
Publication date :
1998
Journal title :
Journal of Physics : B Atomic Molecular and Optical Physics
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