Figure 2
From: Enhanced relativistic-electron beam collimation using two consecutive laser pulses
Data obtained for a focal spot ratio \({\phi }_{1}/{\phi }_{2}=2.5\). (a) Set of typical Cu-Kα (top) and CTR (bottom) images obtained at different delays Δt = 0 ps (left), 3 ps (middle) and 5 ps (right). (b) Comparison of Cu-Kα (red circles) and of CTR (blue circles) emission spot sizes. The red crosses show the results of the simulated Cu-Kα emission, reproducing the delay at which optimal collimation occurs.
