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19 April 2024

» arxiv » 1104.2451

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Mapping X-ray emission in a laser-plasma accelerator
S. Corde ; C. Thaury ; K. Ta Phuoc ; A. Lifschitz ; G. Lambert ; J. Faure ; O. Lundh ; E. Benveniste ; A. Ben-Ismail ; L. Arantchuk ; A. Marciniak ; A. Stordeur ; P. Brijesh ; A. Rousse ; A. Specka ; V. Malka ;
Date:	13 Apr 2011
Abstract:	The X-ray emission in laser-plasma accelerators can be a powerful tool to understand the physics of relativistic laser-plasma interaction. It is shown here that the mapping of betatron X-ray radiation can be obtained from the X-ray beam profile when an object is placed off-axis and close to the source. The influence of the plasma density on the position and the longitudinal profile of the X-ray emission is investigated and compared to Particle-In-Cell simulations. The results provide insight on the dynamics of the interaction, including the laser pulse self-focusing, electron self-injection and the role of the electron beam wakefield.
Source:	arXiv, 1104.2451
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