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da xing ji zhuang xiang jian ce shi de ping bi she ji
Author(s): 
Pages: 44-47
Year: Issue:  4
Journal: Radiation Protection

Keyword:  大型集装箱检测室屏蔽设计X射线剂量;
Abstract: 大型集装箱检测系统是当前用于反走私的先进设备之一。它采用X射线扫描原理,射线被准直成扇形束,在加速器给束的情况下对被检测的集装箱进行扫描,每次照射时间不超过1min。这种高度准直和间歇式辐照与一般工业辐照加速器的工作状况是不同的。本文介绍的清华大学1∶1大型集装箱检测系统是一实验研究设备,其屏蔽设计由于采用三次准直,加大了射线的准直度,使每次检测被检物所受辐射剂量降低到不大于150μGy的水平
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