利用角关联计算符合相加修正因子

Computation of coincidence summing correction coefficient using angular correlation

提供了一种理论计算符合相加修正因子的方法。根据级联衰变的两个 γ光子之间角度服从某一分布 ,利用蒙特卡罗随机模拟方法 ,理论计算 60 Co点源离探测器为某一高度时各 γ光子的符合相加修正因子。结果表明 。

This paper presents a new theoretical method for the computation of coincidence summing correction coefficient. This method uses Monte Carlo simulation to computate the coincidence summing correction coefficients of γ photons when 60 Co point source is at a certain height from the detector, according to the fact that the angles formed by two adjacent photons from decay follow certain distribution. Results show that the coincidence summing correction coefficient decreases as height increases.