Betatron oscillations of electrons accelerated in laser wakefields characterized by spectral x-ray analysis

Abstract : Relativistic electrons accelerated by laser wakefields can produce x-ray beams from their motion in plasma termed betatron oscillations. Detailed spectral characterization is presented in which the amplitude of the betatron oscillations r is studied by numerical analysis of electron and x-ray spectra measured simultaneously. We find that r reaches as low as 1 μm in agreement with previous studies of radiation based on coherence and far-field spatial profile.
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Submitted on : Tuesday, September 7, 2010 - 3:50:36 PM
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Félicie Albert, Rahul Shah, Kim Ta Phuoc, Romuald Fitour, Frédéric Burgy, et al.. Betatron oscillations of electrons accelerated in laser wakefields characterized by spectral x-ray analysis. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2008, 77 (5), pp.056402. ⟨10.1103/PhysRevE.77.056402⟩. ⟨hal-00515607⟩

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