Figure 3
From: Bright betatron X-ray radiation from a laser-driven-clustering gas target
Electron beam characteristics: The beam profile obtained using 18 μm Al foil wrapped IP for He target (a) and Ar target (b), respectively, with the same electron density (2 × 1019 cm−3) and the same laser parameters.The electron spectra are shown in (c) and (d) obtained after the dispersive magnet. The color scale is the same in (c) and (d).
