宇航计测技术

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137Cs，60Co大面积航空平面源的制备技术

孙保山1；张积运2；陈细林3；胡明考2；梁永顺2；杜晓立2   

  1. 1、湖南省核工业地质调查院，长沙 410011；
    2、核工业航测遥感中心，石家庄 050002；
    3、中国原子能科学研究院，北京 102413
  • 出版日期:2015-02-15 发布日期:2015-02-15

Development Technology for 137Cs, 60Co Large Aero Plane Source

SUN Bao-shan1；ZHANG Ji-yun2；CHEN Xi-lin3；HU Ming-kao2；LIANG Yong-shun2；DU Xiao-li2   

  1. 1、Hunan Institute of Geological Survey, Changsha 410011;
    2、Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002;
    3、China Institute of Atomic Energy, Beijing 102413
  • Online:2015-02-15 Published:2015-02-15

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摘要： 用于校准航空γ谱仪的137Cs，60Co大面积航空平面源对传统的涂刷制源技术提出了挑战，为确保平面上的均匀性，借鉴现代网格点阵喷涂技术，将137Cs，60Co两种放射性标准溶液分别定量滴注在底衬滤纸上，晾干后热塑封并用环氧树脂将塑封片固定在梯形铝板上，由8块梯形铝板拼接为边长1m的正六边形航空平面源。制备的航空平面源的扩展不确定度（k=2）为4%，不均匀性优于10%。

关键词: 航空平面源, 制备技术, 137Cs, 60Co

Abstract: For the challenge of traditional fabrication method for 137Cs and 60Co aero plane source in aero gamma spectrometer calibration, and ensure the uniformity of the plane, the modern grid lattice spraying technology was adopt, radioactive standard solution of 137Cs and 60Co were quantitative drip on the bottom liner filter paper individually, heat sealing after dried, fixed the plastic package slice on the trapezoidal aluminium plate with epoxy resin. 8 blocks of aluminium plate compose plane source of regular hexagon side length of 1m.The expanded uncertainly （k=2） of plane source is 4%, the heterogeneity is better than 10%.

Key words: Aero plane sourc, Development technology, 137Cs, 60Co

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