Attosecond control of dissociative ionization of O{sub 2} molecules

Journal Article · Thu Dec 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.063412· OSTI ID:22095638

Siu, W.; Kelkensberg, F.; Gademann, G. ^[1]; Rouzee, A.; Vrakking, M. J. J. ^[1]; Johnsson, P. ^[1]; Dowek, D. ^[2]; Lucchini, M.; Calegari, F. ^[3]; De Giovannini, U.; Rubio, A. ^[4]; Lucchese, R. R. ^[5]; Kono, H. ^[6]; Lepine, F. ^[7]

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1. FOM Institute AMOLF, Science Park 104, NL-1098 XG Amsterdam (Netherlands)
2. Laboratoire des Collisions Atomiques et Moleculaires (UMR Universite Paris-Sud et CNRS, 8625), Batiment 351, Universite Paris-Sud, F-91405 Orsay Cedex (France)
3. Department of Physics, Politecnico di Milano, Istituto di Fotonica e Nanotecnologie CNR-IFN, Piazza Leonardo da Vinci 32, 20133 Milano (Italy)
4. Nano-bio Spectroscopy Group, ETSF Scientific Development Centre, Universidad del Pais Vasco, Avenida Tolosa 72, E-20018 San Sebastian (Spain)
5. Department of Chemistry, Texas A and M University, Post Office Box 30012, College Station, Texas 77842-3012 (United States)
6. Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578 (Japan)
7. Universite Lyon 1/CNRS/LASIM, UMR 5579, 43 Boulevard Du 11 Novembre 1918, F-69622 Villeurbane (France)

We demonstrate that dissociative ionization of O{sub 2} 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.

• OSTI ID: 22095638
• Journal Information: Physical Review. A, Vol. 84, Issue 6; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
BRANCHING RATIO
COUPLING
ELECTRONIC STRUCTURE
EXTREME ULTRAVIOLET RADIATION
INFRARED RADIATION
IONIZATION
MOLECULAR IONS
MOLECULES
OXYGEN
PHOTON-MOLECULE COLLISIONS
POTENTIAL ENERGY
PULSES
TIME DELAY
WAVE PACKETS