MeV-energy X rays from inverse compton scattering with laser-wakefield accelerated electrons

S. Chen, N. D. Powers, I. Ghebregziabher, C. M. Maharjan, C. Liu, G. Golovin, S. Banerjee, J. Zhang, N. Cunningham, A. Moorti, S. Clarke, S. Pozzi, D. P. Umstadter

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182 Scopus citations

Abstract

We report the generation of MeV x rays using an undulator and accelerator that are both driven by the same 100-terawatt laser system. The laser pulse driving the accelerator and the scattering laser pulse are independently optimized to generate a high energy electron beam (>200 MeV) and maximize the output x-ray brightness. The total x-ray photon number was measured to be ∼1×107, the source size was 5 μm, and the beam divergence angle was ∼10 mrad. The x-ray photon energy, peaked at 1 MeV (reaching up to 4 MeV), exceeds the thresholds of fundamental nuclear processes (e.g., pair production and photodisintegration).

Original languageEnglish (US)
Article number155003
JournalPhysical Review Letters
Volume110
Issue number15
DOIs
StatePublished - Apr 10 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Chen, S., Powers, N. D., Ghebregziabher, I., Maharjan, C. M., Liu, C., Golovin, G., Banerjee, S., Zhang, J., Cunningham, N., Moorti, A., Clarke, S., Pozzi, S., & Umstadter, D. P. (2013). MeV-energy X rays from inverse compton scattering with laser-wakefield accelerated electrons. Physical Review Letters, 110(15), [155003]. https://doi.org/10.1103/PhysRevLett.110.155003