Attosecond control of dissociative ionization of O2 molecules

W. Siu, F. Kelkensberg, G. Gademann, A. Rouzée, P. Johnsson, D. Dowek, M. Lucchini, F. Calegari, U. De Giovannini, A. Rubio, R. R. Lucchese, H. Kono, F. Lépine, and M. J. J. Vrakking
Phys. Rev. A 84, 063412 – Published 14 December 2011

Abstract

We demonstrate that dissociative ionization of O2 can be controlled by the relative delay between an attosecond pulse train (APT) and a copropagating infrared (IR) field. Our experiments reveal a dependence of both the branching ratios between a range of electronic states and the fragment angular distributions on the extreme ultraviolet (XUV) to IR time delay. The observations go beyond adiabatic propagation of dissociative wave packets on IR-induced quasistatic potential energy curves and are understood in terms of an IR-induced coupling between electronic states in the molecular ion.

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  • Received 6 June 2011

DOI:https://doi.org/10.1103/PhysRevA.84.063412

©2011 American Physical Society

Authors & Affiliations

W. Siu1, F. Kelkensberg1, G. Gademann1, A. Rouzée1,2, P. Johnsson1,3, D. Dowek4, M. Lucchini5, F. Calegari5, U. De Giovannini6, A. Rubio6, R. R. Lucchese7, H. Kono8, F. Lépine9, and M. J. J. Vrakking1,2

  • 1FOM Institute AMOLF, Science Park 104, NL-1098 XG Amsterdam, The Netherlands
  • 2Max-Born-Institut, Max-Born Strasse 2A, D-12489 Berlin, Germany
  • 3Department of Physics, Lund University, Post Office Box 118, SE-221 00 Lund, Sweden
  • 4Laboratoire des Collisions Atomiques et Moléculaires (UMR Université Paris-Sud et CNRS, 8625), Bâtiment 351, Université Paris-Sud, F-91405 Orsay Cedex, France
  • 5Department of Physics, Politecnico di Milano, Istituto di Fotonica e Nanotecnologie CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
  • 6Nano-bio Spectroscopy Group, ETSF Scientific Development Centre, Universidad del País Vasco, Avenida Tolosa 72, E-20018 San Sebastián, Spain
  • 7Department of Chemistry, Texas A&M University, Post Office Box 30012, College Station, Texas 77842-3012, USA
  • 8Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
  • 9Université Lyon 1/CNRS/LASIM, UMR 5579, 43 Boulevard Du 11 Novembre 1918, F-69622 Villeurbane, France

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Issue

Vol. 84, Iss. 6 — December 2011

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