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  • Effects of laser pulse duration and intensity on Coulomb explosion of CO2: signatures of charge-resonance enhanced ionization

    Author(s)
    Litvinyuk, IV
    Bocharova, I
    Sanderson, J
    Kieffer, JC
    Légaré, F
    Griffith University Author(s)
    Litvinyuk, Igor
    Year published
    2009
    Metadata
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    Abstract
    We studied laser-induced Coulomb explosion of CO2 by full triple-coincidence momentum resolved detection of resulting ion fragments. From the coincidence momentum data we can reconstruct molecular geometry immediately before explosion. We observe the dynamics of Coulomb explosion by comparing reconstructed CO2 geometries for different Ti:Sapphire laser pulse durations (at the same intensity) ranging from few cycles (7 fs) to 200 fs. We conclude that for longer pulse durations (=100 fs) Coulomb explosion proceeds through the enhanced ionization mechanism taking place at the critical O- O distance of 8 a.u., similarly ...
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    We studied laser-induced Coulomb explosion of CO2 by full triple-coincidence momentum resolved detection of resulting ion fragments. From the coincidence momentum data we can reconstruct molecular geometry immediately before explosion. We observe the dynamics of Coulomb explosion by comparing reconstructed CO2 geometries for different Ti:Sapphire laser pulse durations (at the same intensity) ranging from few cycles (7 fs) to 200 fs. We conclude that for longer pulse durations (=100 fs) Coulomb explosion proceeds through the enhanced ionization mechanism taking place at the critical O- O distance of 8 a.u., similarly to well known charge-resonance enhanced ionization (CREI) in H2.
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    Conference Title
    Journal of Physics: Conference Series
    Volume
    194
    Issue
    3
    DOI
    https://doi.org/10.1088/1742-6596/194/3/032063
    Subject
    Atomic and Molecular Physics
    Atomic, Molecular, Nuclear, Particle and Plasma Physics
    Condensed Matter Physics
    Other Physical Sciences
    Publication URI
    http://hdl.handle.net/10072/32838
    Collection
    • Conference outputs

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