Figure 2: Snapshot of a particle-in-cell simulation of the laser-plasma undulator.
From: An ultracompact X-ray source based on a laser-plasma undulator

The laser, which propagates from left to right, and the scattered electromagnetic waves are shown in blue. The relativistic electron beam that follows the laser is represented in pink, the ions and the electrons of the wires are shown in yellow and orange, respectively. The green vectors represent the electric field generated by the plasma wires. In this simulation, the parameters from Table 1 are used.