圆锥台形屏蔽体辐射衰减率的仿真研究

The Simulation in Truncated Cone About Radioactive Shield Attenuation

提出一种数值解析法计算从放射线源到评价点的放射线所穿透圆锥台形屏蔽物体的交点坐标 ,从而可快速预测辐射屏蔽衰减率。用空间解析法建立了圆锥台形物体的数学模型。从曲面方程和直线方程的联立解求出交点。在判断放射线是否穿透此圆锥台体时 ,又提出了圆锥台形屏蔽体的假想外接长方体的建模方法 ,将曲面方程联立解的复杂计算简化为一次代数方程的简单计算 ,大幅度地缩短了计算时间。显示了直观的计算结果。

As a rapid calculation of radioactive shield attenuation in truncated cone, the cross points penetrated through the truncated right angle cone shielded region from source points to the detector point have been studied via numerical analysis. First, the truncated right angle cone mathematical model has been built by space analysis. Second, the camber equation is developed for the crss points. Judging on the radioactive rays whether they penetrated through the truncated right angle cone shield configuration. A hypothetical circumscribed rectangular parallelepiped of the truncated right angle cone shield configuration is also presented. The methods simplified the camber equation into linear equation and reduced the calculation time significantly. The results of computation are shown.