Schematic of X-Calibur (IMAGE) Washington University in St. Louis Caption This sketch of X-Calibur shows its main components. X-rays focused on a scintillator rod by an assembly of X-ray mirrors collide with electrons in the rod and are scattered into solid-state detectors (gray bars), developed at Washington University, that wrap round the rod. The scattering directions encode information about the polarization properties of the incident X-rays. Credit WUSTL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.