Demonstration of Single-Shot High-Quality Cascaded High-Energy-Electron Radiography using Compact Imaging Lenses Based on Permanent-Magnet Quadrupoles

Abstract

High-energy electron radiography is an emerging technique for imaging matter at high energy densities ($i.e.$ under extreme temperature and pressure) with high spatiotemporal resolution, but its development is hindered by the technical difficulty of creating advanced electron optics. This study explores the combination of state-of-the-art high-brightness electron sources with an innovative cascaded imaging system to make progress on the problem. Interestingly, the energy spread of the electron source seems to be the main obstacle to further improvement of the resolving power of this technology.