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Proceedings Paper

Application of CZT detectors in nuclear materials safeguards
Author(s): Wayne D. Ruhter; Anthony D. Lavietes; DeLynn Clark
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Paper 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.

Paper Details

Date Published: 1 July 1998
PDF: 6 pages
Proc. SPIE 3446, Hard X-Ray and Gamma-Ray Detector Physics and Applications, (1 July 1998); doi: 10.1117/12.312892
Show Author Affiliations
Wayne D. Ruhter, Lawrence Livermore National Lab. (United States)
Anthony D. Lavietes, Lawrence Livermore National Lab. (United States)
DeLynn Clark, Lawrence Livermore National Lab. (United States)

Published in SPIE Proceedings Vol. 3446:
Hard X-Ray and Gamma-Ray Detector Physics and Applications
F. Patrick Doty; Richard B. Hoover, Editor(s)

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