Application of CZT detectors in nuclear materials safeguards

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High-resolution, gamma- and X-my spectrometry are used routinely in nuclear materials safeguards vetication measurements. These measurements are mostly performed with high-purity germanium (HJ?Ge) 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 insu&ient for many verification measurements. Semiconductor detectors that operate at room temperatures, such as cadmium-zinc-telhuide (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 ... continued below

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Clark, D; Lavietes, A D & Ruhter, W D April 8, 1998.

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High-resolution, gamma- and X-my spectrometry are used routinely in nuclear materials safeguards vetication measurements. These measurements are mostly performed with high-purity germanium (HJ?Ge) 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 insu&ient for many verification measurements. Semiconductor detectors that operate at room temperatures, such as cadmium-zinc-telhuide (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 215U 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

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  • International Symposium on Optical Science, Engineering, and Instrumentation, 43rd Annual Meeting, San Diego, CA, July 19-24, 1998

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  • Other: DE00003014
  • Report No.: UCRL-JC-130548
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 3014
  • Archival Resource Key: ark:/67531/metadc674566

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  • April 8, 1998

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  • July 25, 2015, 2:20 a.m.

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Clark, D; Lavietes, A D & Ruhter, W D. Application of CZT detectors in nuclear materials safeguards, article, April 8, 1998; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc674566/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.