高能闪光照相中陡坡准直体成像性能实验研究

Experimental research of the performance of graded collimators in high-energy flash X-ray radiography

在针对FTO样品的高能闪光照相实验中,比较了一般准直体与陡坡准直体对FTO样品的成像性能。结果表明,陡坡准直体对降低散射及缩小照射量量程非常有效,可得到层次分明的底片图像;采用一般准直体则无法得到有意义的样品图像。对实验进行了蒙卡模拟,模拟结果与实验结果一致。

In the high-energy flash radiography of FTO object,the performance of a general collimator and two graded collimators was compared by experiments.The results demonstrated that graded collimator could reduce scatter greatly,and clear image could be acquired with graded collimators.On the contrary,meaningful image couldn't be acquired with general collimator.