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本文对辐射场基本参数进行了测定。辐射场剂量分布的不均匀度为±2％;高度分布出现等剂量区,据此判定源的吊装高度为85cm,且上下对称;水平分布在±2％偏差范围内,辐射场半径r>100cm时,遵从反平办法则;时-空分布按衰变规律导出计算
In this paper, the basic parameters of the radiation field were determined. Radiation field dose distribution of non-uniformity of ± 2%; height distribution of equal dose area, which determine the source of the lifting height of 85cm, and up and down symmetry; horizontal distribution within ± 2% deviation range Radiation field radius r> 100cm When obeying the anti-level approach; time-space distribution by the law of decay calculated