Figure 3
From: Direct acceleration of electrons by a CO2 laser in a curved plasma waveguide
Energy spread of the accelerated electron bunch in CPW.
(a) The r.m.s. energy spread obtained for different injected bunch durations. (b) Longitudinal and (c) transverse phase space of electrons in the first CPW period for 1-μm witness duration. (d) The relative energy spread evolution during the 10-cm acceleration of 1-μm duration witness bunch. The red line in (b) shows the electron energy spectrum, the different colors in (c) corresponding to the phase space at corresponding distance and the inset of (d) presents the phase space of electrons at highest energies.
