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Proceedings Paper

Cooling of relativistic electron beams in chirped laser pulses
Author(s): Samuel R. Yoffe; Adam Noble; Yevgen Kravets; Dino A. Jaroszynski
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Paper Abstract

The next few years will see next-generation high-power laser facilities (such as the Extreme Light Infrastructure) become operational, for which it is important to understand how interaction with intense laser pulses affects the bulk properties of a relativistic electron beam. At such high field intensities, we expect both radiation reaction and quantum effects to play a significant role in the beam dynamics. The resulting reduction in relative energy spread (beam cooling) at the expense of mean beam energy predicted by classical theories of radiation reaction depends only on the energy of the laser pulse. Quantum effects suppress this cooling, with the dynamics additionally sensitive to the distribution of energy within the pulse. Since chirps occur in both the production of high-intensity pulses (CPA) and the propagation of pulses in media, the effect of using chirps to modify the pulse shape has been investigated using a semi-classical extension to the Landau-Lifshitz theory. Results indicate that even large chirps introduce a significantly smaller change to final state predictions than going from a classical to quantum model for radiation reaction, the nature of which can be intuitively understood.

Paper Details

Date Published: 12 May 2015
PDF: 8 pages
Proc. SPIE 9509, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources, 950905 (12 May 2015); doi: 10.1117/12.2182573
Show Author Affiliations
Samuel R. Yoffe, Univ. of Strathclyde (United Kingdom)
Adam Noble, Univ. of Strathclyde (United Kingdom)
Yevgen Kravets, Ctr. de Physique Théorique, École Polytechnique (France)
Univ. of Strathclyde (United Kingdom)
Dino A. Jaroszynski, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 9509:
Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources
Dino A. Jaroszynski, Editor(s)

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