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

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. TomassiniP. Martin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

86 Citations (Scopus)

Abstract

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
Volume101
Issue number10
DOIs
Publication statusPublished - 03 Sep 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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