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Electron beam cooling in intense focussed laser pulses

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Figure

Figure 1 shows the relative variation of the longitudinal and transverse phase space contraction as quan-
Figure 2. (Colour online.) Gaussian laser beam with waist w0 = 1 µm (propagating in −ζ direction) before (left), during(centre) and after (right) the interaction with an electron bunch (moving in +ζ direction).
Figure 3. (Colour online.) Example trajectories for electrons with initial γ(bottom right) 900 = 500 colliding with a circularly-polarisedlaser with intensity a0 = 200 (I = 8.6 × 1022 W/cm2) at initial angle (top left) 0◦; (top right) 30◦; (bottom left) 60
Figure 4. (Colour online.) Final electrons: Comparison of deviation angle ∆θ = θf − θi and final energy γf.

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