Detector System for Radiation Imaging Using Inverse Collimation

Abstract

This paper describes the concept of using inverse collimation for directional radiation detection, enabling small, lightweight and cost-effective radiation imaging devices. An inverse collimator has been successfully implemented in a patented detector system that maps the direction and intensities of incident gamma radiation to generate a 4π steradian image of radiation sources. An inverse collimator is presented as a novel solution to heavy and unwieldy collimators, by shielding only from the direction of interest. Applications include visual identification of radiological hazards in nuclear production, waste management, decommissioning, and environments where accessibility is low and risk of radiological contamination is high.