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  Break-Up of H2 in Singly Ionizing Collisions with Fast Protons: Channel-Selective Low-Energy Electron Spectra

Dimopoulou, C., Moshammer, R., Fischer, D., Höhr, C., Dorn, A., Fainstein, P. D., et al. (2004). Break-Up of H2 in Singly Ionizing Collisions with Fast Protons: Channel-Selective Low-Energy Electron Spectra. Physical Review Letters, 93: 123203. doi:10.1103/PhysRevLett.93.123203.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8B47-6 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-8B48-4
Genre: Journal Article

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 Creators:
Dimopoulou, C.1, Author           
Moshammer, R.1, Author           
Fischer, D.2, Author           
Höhr, C.1, Author           
Dorn, A.1, Author           
Fainstein, P. D.3, Author
Crespo López Urrutia, J. R.1, Author           
Schröter, C. D.1, Author           
Kollmus, H.1, Author           
Mann, R.3, Author
Hagmann, S.1, Author           
Ullrich, J.1, Author           
Affiliations:
1Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society, ou_904547              
2Daniel Fischer - Emmy Noether Junior Research Group, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society, ou_907553              
3Gesellschaft für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany Institut für Kernphysik, August-Euler-Strasse 6, 60486 Frankfurt, Germany Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina, ou_persistent22              

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Free keywords: 34.50.Gb, 33.80.Eh
 Abstract: Dissociative as well as nondissociative single ionization of H2 by 6 MeV proton impact has been studied in a kinematically complete experiment by measuring the momentum vectors of the electron and the H+ fragment or the H2+ target ion, respectively. For the two ionization pathways, the electron spectra reveal the role of autoionization of the doubly and singly excited states of H2. The latter explicitly involve the coupling between the electronic and the nuclear motion of the molecule. This is a clear manifestation of a breakdown of the Born-Oppenheimer approximation.

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Language(s): eng - English
 Dates: 2004-09-17
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 119292
URI: http://link.aps.org/abstract/PRL/v93/e123203
DOI: 10.1103/PhysRevLett.93.123203
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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Pages: - Volume / Issue: 93 Sequence Number: 123203 Start / End Page: - Identifier: -