应急防护用γ辐射剂量率仪高量程区校准因子测量方法
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摘要
实验尝试采用治疗水平~(60)Co参考辐射的剂量当量率覆盖高剂量率区,采用防护水平137Cs参考辐射覆盖中低剂量率区,实验测量并计算得到FHZ612-10型号仪器对~(60)Co参考辐射响应转换为137Cs参考辐射响应的修正因子为(1.011,-68.733),实现了对应急防护用γ辐射剂量当量率仪的宽量程校准因子测量方法的探索。
In this experiment, the dose equivalent rate of ~(60)Co reference radiation at the therapeutic level was used to cover the high dose rate range, and 137 Cs reference radiation at the protective level was used to cover the medium and low dose rate range. The correction factor of FHZ612-10,which converts ~(60)Co reference radiation response to 137 Cs reference radiation response, is(1.011,-68.733) derived from measurement and calculation.Measuring method of the wide range calibration factor of gamma radiation dose equivalent rate instrument for emergency protection has been explored.
In this experiment, the dose equivalent rate of ~(60)Co reference radiation at the therapeutic level was used to cover the high dose rate range, and 137 Cs reference radiation at the protective level was used to cover the medium and low dose rate range. The correction factor of FHZ612-10,which converts ~(60)Co reference radiation response to 137 Cs reference radiation response, is(1.011,-68.733) derived from measurement and calculation.Measuring method of the wide range calibration factor of gamma radiation dose equivalent rate instrument for emergency protection has been explored.
引文
[1]全国核仪器仪表标准化技术委员会(sac/tc 30).GB/T4835.2-2013辐射防护仪器β、X和γ辐射周围和/或定向剂量当量(率)仪和/或监测仪第2部分:应急辐射防护用便携式高量程β和光子剂量与剂量率仪[S].北京:中国标准出版社,2013.
[2]International Electro technical Commission.IEC 60846-2:2015Radiation protection instrumentation-Ambient and/or directional dose equivalent(rate)meters and/or monitors for beta,Xand gamma radiation-Part 2:High range beta and photon dose and dose rate portable instruments for emergency radiation protection purposes[S].Geneva:2015.
[3]王遥,唐方东,白雪,等.不同探测器便携式X,γ辐射剂量当量(率)仪的计量特性[J].上海计量测试,2018(2):2-4.
[4]丁洪林.核辐射探测器[M].哈尔滨:哈尔滨工程大学出版社,2010.
[5]谢宇希.数字化宽量程X-γ剂量率连续监测仪的研制[D].衡阳:南华大学,2013.
[6]吴德波,凌球,杨彬华,等.基于单片机的宽量程X-γ剂量率连续监测仪[J].核电子学与探测技术,2007,27(6):1070-1072.
[7]全国核能标准化技术委员会.GB/T 12162.2-2004用于校准剂量仪和剂量率仪及确定其能量响应的X和γ参考辐射第2部分:辐射防护用的能量范围为8 keV~1.3 MeV和4 MeV~9 MeV的参考辐射的剂量测定[S].北京:中国标准出版社,2004.
[2]International Electro technical Commission.IEC 60846-2:2015Radiation protection instrumentation-Ambient and/or directional dose equivalent(rate)meters and/or monitors for beta,Xand gamma radiation-Part 2:High range beta and photon dose and dose rate portable instruments for emergency radiation protection purposes[S].Geneva:2015.
[3]王遥,唐方东,白雪,等.不同探测器便携式X,γ辐射剂量当量(率)仪的计量特性[J].上海计量测试,2018(2):2-4.
[4]丁洪林.核辐射探测器[M].哈尔滨:哈尔滨工程大学出版社,2010.
[5]谢宇希.数字化宽量程X-γ剂量率连续监测仪的研制[D].衡阳:南华大学,2013.
[6]吴德波,凌球,杨彬华,等.基于单片机的宽量程X-γ剂量率连续监测仪[J].核电子学与探测技术,2007,27(6):1070-1072.
[7]全国核能标准化技术委员会.GB/T 12162.2-2004用于校准剂量仪和剂量率仪及确定其能量响应的X和γ参考辐射第2部分:辐射防护用的能量范围为8 keV~1.3 MeV和4 MeV~9 MeV的参考辐射的剂量测定[S].北京:中国标准出版社,2004.