Areal density and spatial resolution of high energy electron radiography

Xiao Jiahao^{1, 2}, Zhang Zimin¹, Cao Shuchun^{1, †}, Yuan Ping¹, Shen Xiaokang¹, Cheng Rui^{1, ‡}, Zhao Quantang¹, Zong Yang¹, Liu Ming¹, Zhou Xianming¹, Li Zhongping¹, Zhao Yongtao¹, Tang Chuanxiang³, Huang Wenhui³, Du Yingchao³, Gai Wei^{1, 3, 4}

(color online) Simulated images of the step target with (a) no aperture, (b) 8 mm size aperture, and (c) 4 mm size aperture at the Fourier plane in the x-axis. Lighter areas correspond to more electrons. The target for the imaging is the same as shown in Fig. 3. The thickness of the step shown in the imaging decreases from the left to the right of the image. The left and right edges are blank in the simulations.