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Auger electron-ion coincidence studies to probe molecular dynamics

Céolin, Denis LU ; Miron, C; Simon, M and Morin, P (2004) In Journal of Electron Spectroscopy and Related Phenomena 141(2-3). p.171-181
Abstract
Electron analysis combined with ion mass spectrometry is shown to be a unique tool to understand fragmentation dynamics of core-excited molecules. This article describes in detail a new setup devoted to energy and angle correlations measurements between the emitted particles resulting from inner-shell ionization or excitation. The data collection system is based on a pair of position sensitive detectors mounted behind a double toroidal electron analyzer and a short time-of-flight ion spectrometer. Because all relevant information results in time measurements, a natural synchronization in the events recording is obtained. The optimized geometry for the ion extraction allows spatial focusing for the ion trajectories by means of inhomogeneous... (More)
Electron analysis combined with ion mass spectrometry is shown to be a unique tool to understand fragmentation dynamics of core-excited molecules. This article describes in detail a new setup devoted to energy and angle correlations measurements between the emitted particles resulting from inner-shell ionization or excitation. The data collection system is based on a pair of position sensitive detectors mounted behind a double toroidal electron analyzer and a short time-of-flight ion spectrometer. Because all relevant information results in time measurements, a natural synchronization in the events recording is obtained. The optimized geometry for the ion extraction allows spatial focusing for the ion trajectories by means of inhomogeneous extraction fields while preserving the time focusing. The N-2 molecule has been used for full characterization of the setup whereas the CO2 Molecule illustrates the role of the intermediate resonant state in controlling the final dissociation pattern. The bending mode excitation is shown to emphasize the O+ production, and the ion kinetic energy distribution is rationalized through an impulsive model. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
field, pulsed extraction, coincidence technique, energy and angle correlations, double toroidal electron spectrometer, position sensitive detection, inhomogeneous field, Auger electron, ion, N-2, CO2
in
Journal of Electron Spectroscopy and Related Phenomena
volume
141
issue
2-3
pages
171 - 181
publisher
Elsevier
external identifiers
  • wos:000225473400011
  • scopus:8344257170
ISSN
0368-2048
DOI
10.1016/j.elspec.2004.06.014
language
English
LU publication?
yes
id
30b60693-0d1c-41f3-b52e-4a6507a80e82 (old id 259624)
date added to LUP
2007-08-02 11:18:20
date last changed
2017-08-20 04:32:20
@article{30b60693-0d1c-41f3-b52e-4a6507a80e82,
  abstract     = {Electron analysis combined with ion mass spectrometry is shown to be a unique tool to understand fragmentation dynamics of core-excited molecules. This article describes in detail a new setup devoted to energy and angle correlations measurements between the emitted particles resulting from inner-shell ionization or excitation. The data collection system is based on a pair of position sensitive detectors mounted behind a double toroidal electron analyzer and a short time-of-flight ion spectrometer. Because all relevant information results in time measurements, a natural synchronization in the events recording is obtained. The optimized geometry for the ion extraction allows spatial focusing for the ion trajectories by means of inhomogeneous extraction fields while preserving the time focusing. The N-2 molecule has been used for full characterization of the setup whereas the CO2 Molecule illustrates the role of the intermediate resonant state in controlling the final dissociation pattern. The bending mode excitation is shown to emphasize the O+ production, and the ion kinetic energy distribution is rationalized through an impulsive model.},
  author       = {Céolin, Denis and Miron, C and Simon, M and Morin, P},
  issn         = {0368-2048},
  keyword      = {field,pulsed extraction,coincidence technique,energy and angle correlations,double toroidal electron spectrometer,position sensitive detection,inhomogeneous field,Auger electron,ion,N-2,CO2},
  language     = {eng},
  number       = {2-3},
  pages        = {171--181},
  publisher    = {Elsevier},
  series       = {Journal of Electron Spectroscopy and Related Phenomena},
  title        = {Auger electron-ion coincidence studies to probe molecular dynamics},
  url          = {http://dx.doi.org/10.1016/j.elspec.2004.06.014},
  volume       = {141},
  year         = {2004},
}