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26 April 2024

» arxiv » 0912.0794

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Observation of Plasma-Undulator Harmonics from a Laser Wakefield Accelerator
G. Genoud ; K. Cassou ; F. Wojda ; M. Burza ; C. Kamperidis ; A. Persson ; J. Uhlig ; O. Lundh ; S. Kneip ; S.P.D. Mangles ; H. Ferrari ; A. Lifschitz ; B. Cros ; C.-G. Wahlström ;
Date:	4 Dec 2009
Abstract:	X-rays pulses with undulator-like spectra are observed from a laser-wakefield accelerator. The observation of characteristic undulator features, with well separated harmonic peaks, required measuring the x-ray spectra of individual x-ray pulses. Electrons were accelerated in gas-filled dielectric capillary tubes at laser intensities as low as I=(6 +/- 3)*10^17 W/cm^2. Far-field images of the x-rays, in combination with numerical simulations of collective trajectories of the electrons, provide insight into the interaction.
Source:	arXiv, 0912.0794
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