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描述了１台用于核设施、核材料现场测量的可移动式高分辨分段γ扫描装置。本装置用７５Ｓｅ和１６９Ｙｂ作为透射源测量样品对γ射线的透射率，采用近立体角三维自吸收校正模型计算样品自吸收校正系数ＣＦ（ＡＴ），较准确计算出样品对γ射线的自吸收校正量。本装置适合于准确测定中低密度非均匀核返料和核废物中核材料含量或裂变产物的含量，对２３５Ｕ硝酸铀酰均匀介质的盲样，测量结果与控制电位库仑测定的标准值之偏差小于１．４％。
A portable, high resolution, segmented γ-scanner for nuclear instrumentation was described. The device uses 75Se and 169Yb as the transmission source to measure the γ-ray transmittance of the sample. The self-absorption correction coefficient CF (AT) is calculated by adopting the near solid angle three-dimensional self-absorption correction model and the self-absorption correction the amount. The device is suitable for accurately measuring the content of nuclear material or fission products in medium-low density non-uniform nuclear recycle and nuclear waste. The blind sample of 235U uranyl nitrate homogeneous medium has a deviation from the standard value of control potential Coulometric determination 1.4%.