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Proceedings Paper

Coherently enhanced radiation reaction effects in laser-vacuum acceleration of electron bunches
Author(s): P. W. Smorenburg; L. P. J. Kamp; G. A. Geloni; O. J. Luiten
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Paper Abstract

The effects of coherently enhanced radiation reaction on the motion of subwavelength electron bunches in interaction with intense laser pulses are analyzed. The radiation reaction force behaves as a radiation pressure in the laser beam direction, combined with a viscous force in the perpendicular direction. Due to Coulomb expansion of the electron bunch, coherent radiation reaction takes effect only in the initial stage of the laser-bunch interaction while the bunch is still smaller than the wavelength. It is shown that this initial stage can have observable effects on the trajectory of the bunch. By scaling the system to larger bunch charges, the radiation reaction effects are strongly increased. On the basis of the usual equation of motion, this increase is shown to be such that radiation reaction may suppress the radial instability normally found in ponderomotive acceleration schemes, thereby enabling the full potential of laser-vacuum electron bunch acceleration to GeV energies. However, the applicability of the used equation of motion still needs to be validated experimentally, which becomes possible using the presented experimental scheme. For full details, see our paper [P. W. Smorenburg et al., Laser and Particle Beams 28, pp. 553-562, 2010].

Paper Details

Date Published: 25 May 2011
PDF: 7 pages
Proc. SPIE 8079, Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles, 80790M (25 May 2011); doi: 10.1117/12.888860
Show Author Affiliations
P. W. Smorenburg, Eindhoven Univ. of Technology (Netherlands)
L. P. J. Kamp, Eindhoven Univ. of Technology (Netherlands)
G. A. Geloni, European XFEL GmbH (Germany)
O. J. Luiten, Eindhoven Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 8079:
Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles
Wim P. Leemans; Kenneth W. D. Ledingham; Eric Esarey; Simon M. Hooker, Editor(s)

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