Application of CZT detectors in nuclear materials safeguards

Wayne D. Ruhter; Anthony D. Lavietes; DeLynn Clark

doi:10.1117/12.312892

1 July 1998 Application of CZT detectors in nuclear materials safeguards

Wayne D. Ruhter, Anthony D. Lavietes, DeLynn Clark

Proceedings Volume 3446, Hard X-Ray and Gamma-Ray Detector Physics and Applications; (1998) https://doi.org/10.1117/12.312892
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

High-resolution, gamma- and x-ray spectrometry are used routinely in nuclear materials safeguards verification measurements. These measurements are mostly performed with high-purity germanium detectors, which require cooling at liquid-nitrogen temperatures, thus limiting their utility in field and unattended safeguards measurement applications. Sodium iodide (NaI) scintillation detectors do not require cooling but their energy resolution (10% at 122 keV) is insufficient for many verification measurements. Semiconductor detectors that operate at room temperatures, such as cadmium-zinc-telluride (CZT) detectors, with energy resolution performance reaching 2.0% at 122 keV may be used for certain safeguards verification applications. We have developed hardware to utilize CZT detectors in x- and gamma- ray measurement systems and software to apply such a system in measuring ²³⁵U enrichment for safeguards verification purposes. The paper reports on the CZT detector-based measurement system and measurement results obtained with it. The paper also discusses work on additional improvements to broaden the applications of the system.

Citation Download Citation

Wayne D. Ruhter, Anthony D. Lavietes, and DeLynn Clark "Application of CZT detectors in nuclear materials safeguards", Proc. SPIE 3446, Hard X-Ray and Gamma-Ray Detector Physics and Applications, (1 July 1998); https://doi.org/10.1117/12.312892

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