摘要
目的:用CR-39固体核径迹探测器测量医用电子加速器产生的污染中子辐射。方法:将CR-39固体核径迹探测器用252C f中子源进行剂量刻度,进而确定加速器污染中子辐射剂量。结果与结论:CR-39固体核径迹探测器的刻度系数为(3.76±0.31)×10-5cGy/(径迹数.cm2),加速器污染中子辐射量与主束辐射量的比值在0.05%以内,满足国家职业卫生标准规定的要求。
Objective：To measure neutron contamination in medical electron accelerators using CR-39 solid state nuclear track detectors. Methods：CR-39 solid state nuclear track detectors were calibrated with a standard ^252Cf neutron source. The neutron contamination in the medical electron accelerator was measured by CR-39 detectors. Results and Conclusion： The calibration coefficient of the detector was （3.76 ± 0.31 ） × 10^-5 cGy/（ track number · cm^2）. The neutron dose was below 0.05% of the main X - ray beam and it fulfilled the requirement of national occupational health standards.
出处
《军事医学科学院院刊》
CSCD
北大核心
2006年第4期346-347,368,共3页
Bulletin of the Academy of Military Medical Sciences
关键词
CR-39固体核径迹探测器
刻度系数
径迹密度
粒子加速器
辐射剂量
CR-39 solid state nuclear track detector
calibration coefficient
track density
particle accelerators
radiation dosage
