Attosecond tracing of correlated electron-emission in non-sequential double ionization

Boris Bergues (), Matthias Kübel, Nora G. Johnson, Bettina Fischer, Nicolas Camus, Kelsie J. Betsch, Oliver Herrwerth, Arne Senftleben, A. Max Sayler, Tim Rathje, Thomas Pfeifer, Itzik Ben-Itzhak, Robert R. Jones, Gerhard G. Paulus, Ferenc Krausz, Robert Moshammer, Joachim Ullrich and Matthias F. Kling ()
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Boris Bergues: Max-Planck-Institut für Quantenoptik
Matthias Kübel: Max-Planck-Institut für Quantenoptik
Nora G. Johnson: Max-Planck-Institut für Quantenoptik
Bettina Fischer: Max-Planck-Institut für Kernphysik
Nicolas Camus: Max-Planck-Institut für Kernphysik
Kelsie J. Betsch: Max-Planck-Institut für Quantenoptik
Oliver Herrwerth: Max-Planck-Institut für Quantenoptik
Arne Senftleben: Max-Planck-Institut für Kernphysik
A. Max Sayler: Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität
Tim Rathje: Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität
Thomas Pfeifer: Max-Planck-Institut für Kernphysik
Itzik Ben-Itzhak: J.R. Macdonald Laboratory, Kansas State University
Robert R. Jones: University of Virginia
Gerhard G. Paulus: Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität
Ferenc Krausz: Max-Planck-Institut für Quantenoptik
Robert Moshammer: Max-Planck-Institut für Kernphysik
Joachim Ullrich: Max-Planck-Institut für Kernphysik
Matthias F. Kling: Max-Planck-Institut für Quantenoptik

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: Abstract Despite their broad implications for phenomena such as molecular bonding or chemical reactions, our knowledge of multi-electron dynamics is limited and their theoretical modelling remains a most difficult task. From the experimental side, it is highly desirable to study the dynamical evolution and interaction of the electrons over the relevant timescales, which extend into the attosecond regime. Here we use near-single-cycle laser pulses with well-defined electric field evolution to confine the double ionization of argon atoms to a single laser cycle. The measured two-electron momentum spectra, which substantially differ from spectra recorded in all previous experiments using longer pulses, allow us to trace the correlated emission of the two electrons on sub-femtosecond timescales. The experimental results, which are discussed in terms of a semiclassical model, provide strong constraints for the development of theories and lead us to revise common assumptions about the mechanism that governs double ionization.

Date: 2012
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DOI: 10.1038/ncomms1807

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