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Phys. Rev. Lett. 92, 163001 (2004) [4 pages]

Fully Differential Cross Sections for Photo-Double-Ionization of D2_

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Th. Weber1,4,6, A. Czasch1, O. Jagutzki1, A. Müller1, V. Mergel1, A. Kheifets2, J. Feagin3, E. Rotenberg4, G. Meigs4, M. H. Prior4, S. Daveau4, A. L. Landers5, C. L. Cocke6, T. Osipov6, H. Schmidt-Böcking1, and R. Dörner1,*
1Institut für Kernphysik, Universität Frankfurt, D 60486 Frankfurt, Germany
2Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia
3Department of Physics, California State University–Fullerton, Fullerton, California 92834, USA
4Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
5Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008, USA
6Department of Physics, Kansas State University, Manhattan, Kansas 66506 USA

Received 1 August 2003; published 20 April 2004

We report the first kinematically complete study of the four-body fragmentation of the D2 molecule following absorption of a single photon. For equal energy sharing of the two electrons and a photon energy of 75.5 eV, we observed the relaxation of one of the selection rules valid for He photo-double-ionization and a strong dependence of the electron angular distribution on the orientation of the molecular axis. This effect is reproduced by a model in which a pair of photoionization amplitudes is introduced for the light polarization parallel and perpendicular to the molecular axis.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.163001
DOI:
10.1103/PhysRevLett.92.163001
PACS:
33.60.Cv, 33.80.Eh, 31.15.Ar

*Electronic address: doerner@hsb.uni-frankfurt.de

 
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