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文章描述了一台大型高分辨分段γ扫描装置。由近立体角三维自吸收校正模型计算自吸收校正系数ＣＦ（ＡＴ）与透射率Ｔ的函数关系。本装置设计了四位透射源轮和可调立体角的１３ｃｍ￣３ＨＰＧｅ探测器系统。采用￣（７５）Ｓｅ，￣（１６９）Ｙｂ作为透射源。扫描台架可容纳１─８０１已包装废物样品。借助于传感器、步进马达和马达驱动器以及计算机控制实现换源、档束器开闭、全自动分段旋转扫描和全自动数据获取与处理，并进行γ射线自吸收校正计算。对１１￣（２３５）Ｕ硝酸铀酰系列样品和￣（１９２）Ｉｒ硝酸溶液的系列样品进行了Ｋ值刻度。获得的Ｋ值平均标准偏差分别为±０．６２％和±０．４２％。该装置对测定中、低密度非均匀核返料、核废物中核材料含量或裂变产物含量有重要的应用价值。
The article describes a large high-resolution segmented gamma scanner. The self-absorption correction coefficient CF (AT) as a function of the transmittance T is calculated from the near solid angle three-dimensional self-absorption correction model. The device is designed with four transmission source wheel and adjustable solid angle 13cm ~ 3HPGe detector system. As (75) Se, ~ (169) Yb is used as the transmission source. The scan gantry accommodates 1 - 801 packaged waste samples. With sensors, stepper motors and motor drives and computer control to achieve the source, the beam switch open and close, fully automatic sub-scanning and automatic scanning and data acquisition and processing, and gamma-ray self-absorption correction calculation. A series of samples of 11 U 235 U series uranyl nitrate samples and 192 Ulline nitric acid solutions were subjected to K scale calibration. The average standard deviation of K values obtained were ± 0.62% and ± 0.42%, respectively. The device has important application value in the determination of medium and low density inhomogeneous nuclear recycle, nuclear material content in nuclear waste or fission product content.