经调试后的车辆出入口核材料检测装置于2004年被安装在集装箱检测试验现场,进行了集装箱箱体对本底计数的影响和装置的检测误报率试验。分别将高浓铀、低浓铀及137Cs置于集装箱中,在不同厚度铁的屏蔽下,进行了检测灵敏度的实验。实验结果表明,该装置具有较高的检测灵敏度和较低 After the commissioning of the vehicle entrance and exit of nuclear materials testing device was installed in 2004, the test site of the container testing carried out the impact of the container box on the background count and false alarm rate test device. High enriched uranium (LEU), low enriched uranium (LEU) and 137Cs were placed in containers respectively. Sensitivity experiments were conducted under different thicknesses of iron shielding. Experimental results show that the device has higher detection sensitivity and lower