Special Nuclear Material Characterization Using Digital 3-D Position Sensitive CdZnTe Detectors and High Purity Germanium Spectrometers

Streicher, Michael; Brown, Steven; Zhu, Yuefeng; Goodman, David; He, Zhong

doi:10.1109/TNS.2016.2593631

Special Nuclear Material Characterization Using Digital 3-D Position Sensitive CdZnTe Detectors and High Purity Germanium Spectrometers

Journal Article · Wed Jul 20 04:00:00 EDT 2016 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/TNS.2016.2593631· OSTI ID:1367661

Streicher, Michael ^[1]; Brown, Steven ^[2]; Zhu, Yuefeng ^[2]; Goodman, David ^[2]; He, Zhong ^[2]

Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Sciences; Department of Nuclear Engineering and Radiological Sciences, University of Michigan
Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Nuclear Engineering and Radiological Sciences

Special nuclear material (SNM) monitoring often requires high resolution gamma-ray spectroscopy for material characterization. Portable systems and rapid deployment are also highly valued for some applications. Deployable gamma-ray imaging spectrometers using pixelated CdZnTe semiconductor detectors have become commercially available within the past three years to meet these requirements. CdZnTe systems have demonstrated room-temperature energy resolutions below 0.5% FWHM at 662 keV using single pixel events and below 0.7% FWHM at 662 keV using all events. The systems are able to go from storage to measurement in less than two minutes. Special nuclear materials were measured at the Y-12 National Security Complex and at the Device Assembly Facility at the Nevada National Security Site. The use of a CdZnTe system to measure uranium enrichment was demonstrated and uranium spectral features were compared to a commercially available high purity germanium (HPGe) spectrometer. Lastly, the use of passive gamma-ray spectroscopy techniques to estimate plutonium grade using CdZnTe detectors was demonstrated for the first time.

Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)

DOE Contract Number:: NA0002534; NA0002131

OSTI ID:: 1367661

Journal Information:: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 5 Vol. 63; ISSN 0018-9499

Publisher:: IEEE

Country of Publication:: United States

Language:: English

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CdZnTe detectors
gamma-ray imaging
gamma-ray spectroscopy
special nuclear materials monitoring

Special Nuclear Material Characterization Using Digital 3-D Position Sensitive CdZnTe Detectors and High Purity Germanium Spectrometers

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