title: MeV-energy x rays from inverse compton scattering with laser-wakefield accelerated electrons.
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 ∼1×10(7), 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).
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: S
authors.initials: S
authors.lastname: Chen
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: N D
authors.initials: ND
authors.lastname: Powers
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: I
authors.initials: I
authors.lastname: Ghebregziabher
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Maharjan
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: C
authors.initials: C
authors.lastname: Liu
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: G
authors.initials: G
authors.lastname: Golovin
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: S
authors.initials: S
authors.lastname: Banerjee
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: J
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: N
authors.initials: N
authors.lastname: Cunningham
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: A
authors.initials: A
authors.lastname: Moorti
authors.affiliation: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: S
authors.initials: S
authors.lastname: Clarke
authors.affiliation: Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109, USA.
authors.forename: S
authors.initials: S
authors.lastname: Pozzi
authors.affiliation: Department of Physics and Astronomy, University of Nebraska, Lincoln, Nebraska 68588, USA.
authors.forename: D P
authors.initials: DP
authors.lastname: Umstadter