体源法校准环境X、γ剂量率仪结果不确定度评定

Body Instrument Results Source Calibration Environment X、γ Dose Rate Evaluation of Uncertaint

基于环境X、γ剂量率仪(简称剂量率仪)在环境辐射监测领域中的重要性,结合采用环境电离辐射体源(简称体源)法校准剂量率仪的原理和在实际测量工作中使用情况,对剂量率仪的校准结果的可靠性的影响因素进行了深入的分析,结果表明影响因素主要有几何修正、散射影响、体源标准复现量值、能量响应及统计涨落等,最后根据数学模型与影响因素评定了剂量率仪校准结果的不确定度。

The environment of X y dose rate meter based on （referred to as the dose rate meter） in environmental radiation monitoring of the importance, with environmentat ionizing radiation （referred to as the body source） principle method to calibrate the dose rate instrument and used in actual measurement, analyzed the calibration results of dose rate instrument reliability the influence factors, results show that the main factors that affect the geometric correction, scattering effects, body source standard value realization, the energy response and the statistical fluctuation and, finally, according to the mathematical model and evaluate the effects of factors of uncertainty for the calibration results of dose rate