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Imaging electron trajectories in a laser-wakefield cavity using betatron X-ray radiation |
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| Authors: | Phuoc Kim Ta Corde Sebastien Shah Rahul Albert Felicie Fitour Romuald Rousseau Jean-Philippe Burgy Fréderic Mercier Brigitte Rousse Antoine |
| Institution: | Laboratoire d'Optique Appliquée, ENSTA, CNRS UMR7639, Ecole Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France. kim.tapuoc@ensta.fr |
| Abstract: | We demonstrate that betatron x-ray radiation accurately provides direct imaging of electrons trajectories accelerated in laser wakefields. Experimental far field x-ray beam profiles reveal that electrons can follow similar transverse trajectories with typical excursions of 1.5 microm+/-0.5 microm in the plane of laser polarization and 0.7 microm+/-0.2 microm in the plane perpendicular. |
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