In past research, the team compared performance of the new cesium lead bromide detector to the conventional cadmium zinc telluride (CZT) detector and found it performed as well in detecting gamma rays. Using the perovskite material, the team achieved high resolution in energy detection for gamma rays using a pixelated detector design. Detectors like these are critical for national security, where they're used to detect illegal nuclear materials smuggled across borders and aid in nuclear forensics as well as in medical diagnostics imaging. This method allows users to identify legal versus illegal gamma rays. In addition to being less costly than typical devices, the new method for detecting gamma rays is also highly capable at differentiating between rays of different energies. Using cesium lead bromide in the form of perovskite crystals, the team created highly efficient detectors in both small, portable devices for field researchers and very large detectors. Researchers have developed new devices based on a low-cost material to aid in the detection and identification of radioactive isotopes. Security officials are tasked with preventing criminals from smuggling dangerous materials into a country detecting nuclear substances has been difficult and costly. Northwestern University, Evanston, Illinois
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