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  • Laser Coulomb-explosion imaging of small molecules

    Author(s)
    Legare, F
    Lee, KF
    Litvinyuk, IV
    Dooley, PW
    Wesolowski, SS
    Bunker, PR
    Dombi, P
    Krausz, F
    Bandrauk, AD
    Villeneuve, DM
    Corkum, PB
    Griffith University Author(s)
    Litvinyuk, Igor
    Year published
    2005
    Metadata
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    Abstract
    We use intense few-cycle laser pulses to ionize molecules to the point of Coulomb explosion. We use Coulomb's law or ab initio potentials to reconstruct the molecular structure of D2O and SO2 from the correlated momenta of exploded fragments. For D2O, a light and fast system, we observed about 0.3 Angstrom and 15degrees deviation from the known bond length and bond angle. By simulating the Coulomb explosion for equilibrium geometry, we showed that this deviation is mainly caused by ion motion during ionization. Measuring three-dimensional structure with half bond length resolution is sufficient to observe large-scale ...
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    We use intense few-cycle laser pulses to ionize molecules to the point of Coulomb explosion. We use Coulomb's law or ab initio potentials to reconstruct the molecular structure of D2O and SO2 from the correlated momenta of exploded fragments. For D2O, a light and fast system, we observed about 0.3 Angstrom and 15degrees deviation from the known bond length and bond angle. By simulating the Coulomb explosion for equilibrium geometry, we showed that this deviation is mainly caused by ion motion during ionization. Measuring three-dimensional structure with half bond length resolution is sufficient to observe large-scale rearrangements of small molecules such as isomerization processes.
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    Journal Title
    Physical Review A (Atomic, Molecular and Optical Physics)
    Volume
    71
    Issue
    1
    DOI
    https://doi.org/10.1103/PhysRevA.71.013415
    Subject
    Atomic and Molecular Physics
    Mathematical Sciences
    Physical Sciences
    Chemical Sciences
    Publication URI
    http://hdl.handle.net/10072/39404
    Collection
    • Journal articles

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