摘要
为了评估放射性场所工作人员体内放射性剂量,常常使用全身计数器(WBC)探测人体的放射性,其探测效率对测量结果至关重要。研究使用蒙特卡洛方法对秦山三期的WBC的2个大面积NaI(Tl)探测器人体测量效率进行模拟,获得较好结果。研究结果表明,对能量从0.08keV^2MeV范围内误差最大为26.6%,对于身高150~180 cm的人体计数率的最大误差40%。
Whole-Body Counting was used to measure radiation dose of body in order to evaluate the internal exposure from inner -radionuclides of worker in radiation field .The efficiency of WBC detector is very impor-tant for measurement .The efficiencies of the two very large NaI （Tl） detectors （7.6 127 40.6 cm） which are used with the whole -body counter were simulated by Monte Carlo technology , good results were obtained .As a result, the relative error is 26.6%for energy from 0.08keV to 2 MeV.The discrepancy of different height a-dult person （150~180 cm） was within 40%.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2013年第12期1502-1506,共5页
Nuclear Electronics & Detection Technology
基金
秦山第三核电有限公司WBC内照射剂量测量不确定度项目资助
关键词
全身计数器
蒙特卡洛
效率
放射性
whole-body counter
Monte Carlo
efficiency
radiation
