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Mechanically cooled patterned IG Compton suppression system for high-sensitivity gamma spectrometric assay of nuclear waste

A unique gamma detection system has been developed that provides significant background suppression at low gamma-ray energies (< 400 keV). This suppression is accomplished with a segmented intrinsic germanium Duode detector developed by Princeton Gamma Tech. While active Compton suppression shields and passive shields are well known for their background suppression capabilities, the Duode design provides additional suppression capabilities not previously available for low intensity, low energy measurements.