Complete photo-fragmentation of the deuterium molecule

T. Weber, A. O. Czasch, O. Jagutzki, A. K. Müller, V. Mergel, A. Kheifets, E. Rotenberg, G. Meigs, M. H. Prior, S. Daveau, A. Landers, C. L. Cocke, T. Osipov, R. Díez Muiño, H. Schmidt-Böcking and R. Dörner ()
Additional contact information
T. Weber: Universität Frankfurt
A. O. Czasch: Universität Frankfurt
O. Jagutzki: Universität Frankfurt
A. K. Müller: Universität Frankfurt
V. Mergel: Universität Frankfurt
A. Kheifets: Australian National University
E. Rotenberg: Lawrence Berkeley National Laboratory
G. Meigs: Lawrence Berkeley National Laboratory
M. H. Prior: Lawrence Berkeley National Laboratory
S. Daveau: Lawrence Berkeley National Laboratory
A. Landers: Auburn University
C. L. Cocke: Kansas State University
T. Osipov: Kansas State University
R. Díez Muiño: Donostia International Physics Center and Unidad de Fisica de Materiales
H. Schmidt-Böcking: Universität Frankfurt
R. Dörner: Universität Frankfurt

Nature, 2004, vol. 431, issue 7007, 437-440

Abstract: Abstract All properties of molecules—from binding and excitation energies to their geometry—are determined by the highly correlated initial-state wavefunction of the electrons and nuclei. Details of these correlations can be revealed by studying the break-up of these systems into their constituents. The fragmentation might be initiated by the absorption of a single photon1,2,3,4,5,6, by collision with a charged particle7,8 or by exposure to a strong laser pulse9,10: if the interaction causing the excitation is sufficiently understood, the fragmentation process can then be used as a tool to investigate the bound initial state11,12. The interaction and resulting fragment motions therefore pose formidable challenges to quantum theory13,14,15. Here we report the coincident measurement of the momenta of both nuclei and both electrons from the single-photon-induced fragmentation of the deuterium molecule. The results reveal that the correlated motion of the electrons is strongly dependent on the inter-nuclear separation in the molecular ground state at the instant of photon absorption.

Date: 2004
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DOI: 10.1038/nature02839

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