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  Probing dissociative molecular dications by mapping vibrational wave functions

Püttner, R., Arion, T., Förstel, M., Lischke, T., Mucke, M., Sekushin, V., et al. (2011). Probing dissociative molecular dications by mapping vibrational wave functions. Physical Review A, 83: 043404. doi:10.1103/PhysRevA.83.043404.

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 Creators:
Püttner, R.1, Author
Arion, T.2, Author
Förstel, M.2, 3, Author
Lischke, T.2, Author
Mucke, M.2, Author
Sekushin, V.1, Author
Kaindl, G.1, Author
Bradshaw, A.M.2, 4, Author
Hergenhahn, U.2, Author
Affiliations:
1Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin-Dahlem, Germany, ou_persistent22              
2Max-Planck-Institut für Plasmaphysik, EURATOM Association, Boltzmannstrasse 2, D-85748 Garching, Germany, ou_persistent22              
3Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany, ou_persistent22              
4Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany, ou_persistent22              

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 Abstract: We present high-resolution photoelectron–Auger-electron coincidence spectra of methane (CH4). Since the vibrational structure in the photoelectron spectrum is resolved, the Auger spectra corresponding to different vibrational levels can be separated. The seven final states of CH42+ are either dissociative or metastable, but in any case are populated in a repulsive part of their potential-energy curve via the Auger decay. The Auger line shapes can therefore be obtained by mapping the vibrational wave functions of the core-hole state into energy space. We have implemented this connection in the data analysis. By simultaneously fitting the different Auger spectra, detailed information on the energies of the dicationic states and their repulsive potential-energy curves is derived.

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Language(s): eng - English
 Dates: 2010-07-272011-04-08
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevA.83.043404
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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 83 Sequence Number: 043404 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2