M400 and H420 Detectors Pass the Updated 2021 ANSI N42.34 Isotope Identification Standard

H3D, Inc. 3D pixelated CdZnTe systems were 3rd-party tested against Section 6.10-6.11 of the updated ANSI 2021 N42.34 standard. All units passed all identification tasks. Furthermore, the intrinsic Compton and coded aperture imaging of pixelated CdZnTe systems can be used to localize complex sources. An example using I-131 and Pu-239 is shown below. I-131 is used to mask Pu-239 due to its similar emissions spectrum. 3D pixelated CdZnTe systems, with better than 1% energy resolution, can easily separate each source's distinct emissions. I-131 and Pu-239 images, corresponding to the green and red photopeaks (top), are formed using coded aperture (middle) and Compton imaging (bottom). Even Eu-154 emissions, a known, minor contaminate in the Radiation Signature Training Device, are visible. These high-performance capabilities are critical in CBRNE measurements where objects of interest may be masked by complex spectra.

Pu-239 and I-131 detection and localization

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