Monitoring and Controlling the Electron Dynamics in Helium with Isolated Attosecond Pulses

    Authors

    S. Gilbertson; M. Chini; X. M. Feng; S. Khan; Y. Wu;Z. H. Chang

    Comments

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    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    TIME; ATOMS; Physics, Multidisciplinary

    Abstract

    Helium atoms in the presence of extreme ultraviolet light pulses can lose electrons through direct photoionization or through two-electron excitation followed by autoionization. Here we demonstrate that, by combining attosecond extreme ultraviolet pulses with near infrared femtosecond lasers, electron dynamics in helium autoionization can be not only monitored but also controlled. Furthermore, the interference between the two ionization channels was modified by the intense near infrared laser pulse. To the best of our knowledge, this is the first time that double excitation and autoionization were studied experimentally by using isolated attosecond pulses.

    Journal Title

    Physical Review Letters

    Volume

    105

    Issue/Number

    26

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000286763300001

    ISSN

    0031-9007

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