Strong Field Double Ionization of Conjugated Molecules

ORAL

Abstract

We use ultrafast (sub-10 fs) pulses and coincidence velocity map imaging to study strong field double ionization of molecules. We observe an enhancement of the double ionization yield for conjugated molecular systems. This enhancement persists even with elliptically polarized light, which excludes the possibility of re-scattering. Fragment ions resulting from Coulomb explosion of the dications are observed with high kinetic energy, which suggests the removal of deeply bound electrons. This hypothesis is corroborated by electronic structure calculations.

*We gratefully acknowledge the support from the Department of Energy under Award Nos. DE-FG02-08ER15983 and DE-FG02-08ER15984

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Authors

  • Arthur Zhao

    • Department of Physics and Astronomy, Stony Brook University, Stony Brook NY 11794-3800

  • Peter Sandor

    • Department of Physics and Astronomy, Stony Brook University, Stony Brook NY 11794-3800

  • Vincent Tagliamonti

    • Department of Physics and Astronomy, Stony Brook University, Stony Brook NY 11794-3800
    • Stony Brook University, Stony Brook, NY
    • Stony Brook University

  • Thomas Weinacht

    • Stony Brook Unversity
    • State Univ of NY- Stony Brook
    • Department of Physics and Astronomy, Stony Brook University, Stony Brook NY 11794-3800
    • Stony Brook University, Stony Brook, NY

  • Spiridoula Matsika

    • Temple University
    • Department of Chemistry, Temple University, Philadelphia PA 19122