Figure 6
From: Luminous, relativistic, directional electron bunches from an intense laser driven grating plasma
(a) Trajectories of fast electrons in the three distinguished stages of laser pulse irradiation. The colorbar represents the simulation time (T0). Stage 1: 0—35T0, Stage 2: 36—60T0, Stage 3: 61—100T0. (b) Quasi-static magnetic field Bz at t = 25 T0 and two selected electron trajectories around this time. (c) The transient field Ex at t = 35 T0 and four selected electron trajectories around this time, where an electromagnetic field component is shown to propagate along the tangent direction in addition to the reflected laser (green dashed line). (d) Surface electric field Ex for Gr500 and Gr1000 at t = 30T0, the moment at which the laser peak impinges on the target. Bz and Ex are normalized by meωc/e.
