Intense γ-ray source in the giant-dipole-resonance range driven by 10-TW laser pulses

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    • A. Giulietti
    • N. Bourgeois
    • T. Ceccotti
    • X. Davoine
    • S. Dobosz
    • P. D'Oliveira
    • M. Galimberti
    • J. Galy
    • A. Gamucci
    • D. Giulietti
    • L. A. Gizzi
    • D. J. Hamilton
    • E. Lefebvre
    • L. Labate
    • J. R. Marquès
    • P. Monot
    • H. Popescu
    • F. Réau
    • G. Sarri
    • P. Tomassini
    • P. Martin

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    A γ-ray source with an intense component around the giant dipole resonance for photonuclear absorption has been obtained via bremsstrahlung of electron bunches driven by a 10-TW tabletop laser. 3D particle-in-cell simulation proves the achievement of a nonlinear regime leading to efficient acceleration of several sequential electron bunches per each laser pulse. The rate of the γ-ray yield in the giant dipole resonance region (8<Eγ<17.5MeV) was measured, through the radio activation of a gold sample, to be 4×108 photons per joule of laser energy. This novel all-optical, compact, and efficient electron-γ source is suitable for photonuclear studies and medical uses.

    Original languageEnglish
    Article number105002
    JournalPhysical Review Letters
    Journal publication date03 Sep 2008
    Issue number10
    Volume101
    DOIs
    StatePublished - 03 Sep 2008
    Externally publishedYes

    ID: 160395509