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Phys. Rev. Lett. 100, 133005 (2008) [4 pages]

Interference in the Collective Electron Momentum in Double Photoionization of H2

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K. Kreidi1,2, D. Akoury1,3, T. Jahnke1, Th. Weber3, A. Staudte1,4, M. Schöffler1, N. Neumann1, J. Titze1, L. Ph. H. Schmidt1, A. Czasch1, O. Jagutzki1, R. A. Costa Fraga1, R. E. Grisenti1,5, M. Smolarski1, P. Ranitovic6, C. L. Cocke6, T. Osipov3, H. Adaniya3, J. C. Thompson7, M. H. Prior3, A. Belkacem3, A. L. Landers7, H. Schmidt-Böcking1, and R. Dörner1,*
1Institut für Kernphysik, J. W. Goethe Universität, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany
2DESY, Notkestrasse 85, 22607 Hamburg, Germany
3Lawrence Berkeley National Laboratory, Berkeley California 94720, USA
4National Research Council, 100 Sussex Drive, Ottawa, Ontario, Canada K1A 0R6
5Gesellschaft für Schwerionenforschung, Planckstrasse 1, 64291 Darmstadt, Germany
6Department of Physics, Kansas State University, Cardwell Hall, Manhattan Kansas 66506, USA
7Department of Physics, Auburn University, Auburn, Alabama 36849, USA

Received 18 December 2007; published 4 April 2008

We investigate single-photon double ionization of H2 by 130 to 240 eV circularly polarized photons. We find a double slitlike interference pattern in the sum momentum of both electrons in the molecular frame which survives integration over all other degrees of freedom. The difference momentum and the individual electron momentum distributions do not show such a robust interference pattern. We show that this interference results from a non-Heitler-London fraction of the H2 ground state where both electrons are at the same atomic center.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.133005
DOI:
10.1103/PhysRevLett.100.133005
PACS:
33.80.Eh

*doerner@atom.uni-frankfurt.de

 
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