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New insight into the Auger decay process in O-2: The coincidence perspective

Arion, Tiberiu; Puettner, Ralph; Lupulescu, Cosmin; Ovsyannikov, Ruslan; Foerstel, Marko; Öhrwall, Gunnar LU ; Lindblad, Andreas; Ueda, Kiyoshi; Svensson, Svante and Bradshaw, Alex M., et al. (2012) In Journal of Electron Spectroscopy and Related Phenomena 185(8-9). p.234-243
Abstract
Photoelectron-Auger electron coincidence spectroscopy is a powerful tool for the investigation of Auger decay processes with different core-ionized intermediate states. In this paper we describe an investigation into the Auger decay of the O-2 molecule, with the purpose of bringing new insight into the dynamics of the core hole decay mechanism. Using a novel experimental approach to measuring such coincidence spectra we report the highest resolution Auger spectrum of O-2 recorded hitherto. In our approach, we have combined the advantages of these coincidence spectra with the high resolution and excellent signal-to-noise ratios of non-coincident Auger spectra and a state-of-the-art fit analysis. In this way we have derived information about... (More)
Photoelectron-Auger electron coincidence spectroscopy is a powerful tool for the investigation of Auger decay processes with different core-ionized intermediate states. In this paper we describe an investigation into the Auger decay of the O-2 molecule, with the purpose of bringing new insight into the dynamics of the core hole decay mechanism. Using a novel experimental approach to measuring such coincidence spectra we report the highest resolution Auger spectrum of O-2 recorded hitherto. In our approach, we have combined the advantages of these coincidence spectra with the high resolution and excellent signal-to-noise ratios of non-coincident Auger spectra and a state-of-the-art fit analysis. In this way we have derived information about the potential energy curves of the final states W-3 Delta(u), B-3 Pi(g), and B' (3)Sigma(-)(u) and concluded that the corresponding Auger transitions are formed to a large part by strongly overlapping vibrational progressions. The present findings are compared to earlier results reported in the literature confirming some theoretical predictions. (C) 2012 Elsevier B.V. All rights reserved. (Less)
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published
subject
keywords
High resolution coincidence spectroscopy, Auger decay, Oxygen, Franck-Condon analysis
in
Journal of Electron Spectroscopy and Related Phenomena
volume
185
issue
8-9
pages
234 - 243
publisher
Elsevier
external identifiers
  • wos:000308627700008
  • scopus:84865037372
ISSN
0368-2048
DOI
10.1016/j.elspec.2012.06.010
language
English
LU publication?
yes
id
cc9bc554-903f-4413-802a-ddc9998e2894 (old id 3139258)
date added to LUP
2012-11-26 11:20:54
date last changed
2017-10-01 04:27:23
@article{cc9bc554-903f-4413-802a-ddc9998e2894,
  abstract     = {Photoelectron-Auger electron coincidence spectroscopy is a powerful tool for the investigation of Auger decay processes with different core-ionized intermediate states. In this paper we describe an investigation into the Auger decay of the O-2 molecule, with the purpose of bringing new insight into the dynamics of the core hole decay mechanism. Using a novel experimental approach to measuring such coincidence spectra we report the highest resolution Auger spectrum of O-2 recorded hitherto. In our approach, we have combined the advantages of these coincidence spectra with the high resolution and excellent signal-to-noise ratios of non-coincident Auger spectra and a state-of-the-art fit analysis. In this way we have derived information about the potential energy curves of the final states W-3 Delta(u), B-3 Pi(g), and B' (3)Sigma(-)(u) and concluded that the corresponding Auger transitions are formed to a large part by strongly overlapping vibrational progressions. The present findings are compared to earlier results reported in the literature confirming some theoretical predictions. (C) 2012 Elsevier B.V. All rights reserved.},
  author       = {Arion, Tiberiu and Puettner, Ralph and Lupulescu, Cosmin and Ovsyannikov, Ruslan and Foerstel, Marko and Öhrwall, Gunnar and Lindblad, Andreas and Ueda, Kiyoshi and Svensson, Svante and Bradshaw, Alex M. and Eberhardt, Wolfgang and Hergenhahn, Uwe},
  issn         = {0368-2048},
  keyword      = {High resolution coincidence spectroscopy,Auger decay,Oxygen,Franck-Condon analysis},
  language     = {eng},
  number       = {8-9},
  pages        = {234--243},
  publisher    = {Elsevier},
  series       = {Journal of Electron Spectroscopy and Related Phenomena},
  title        = {New insight into the Auger decay process in O-2: The coincidence perspective},
  url          = {http://dx.doi.org/10.1016/j.elspec.2012.06.010},
  volume       = {185},
  year         = {2012},
}