Areal density and spatial resolution of high energy electron radiography
Xiao Jiahao1, 2, Zhang Zimin1, Cao Shuchun1, †, Yuan Ping1, Shen Xiaokang1, Cheng Rui1, ‡, Zhao Quantang1, Zong Yang1, Liu Ming1, Zhou Xianming1, Li Zhongping1, Zhao Yongtao1, Tang Chuanxiang3, Huang Wenhui3, Du Yingchao3, Gai Wei1, 3, 4
       

(color online) Schematic diagram of HEER. The trajectories of different colors starting at the object location represent electrons scattered into various angles within the object. The Fourier plane is located at the midpoint of the lens, where a collimator is positioned. The position–angle correlation at injection determines the location of the Fourier plane and partially cancels second-order chromatic aberrations.