1. Key Laboratory of Measurement and Calibration Technology, China Institute of Atomic Energy, Beijing 102413, China
2. National Institute of Metrology, Beijing 100029, China
Abstract：Based on the X and γ-ray reference radiation field of the primary metering station of ionizing radiation of Defense Science & Technology Industry, the radiation characteristics of j613r type GM tube produced by a manufacturer were experimentally studied. Combined with the CT imaging system of the National Institute of Metrology, the internal structure size of the tube was accurately measured, and the energy compensation for the sensitive area was carried out. The results showed that the tube can be used for dose determination in the range of 10.62μSv/h～161.52mSv/h. The optimal compensation area of sensitive region is 88%～90% with the central slit is opened, and 0.81mm Pb compensation layer is applied. After compensation, the deviation of 137Cs is within ±20% in the range of 48～662keV, which can provide measurement components for personal dosimeter.
［1］ 李静, 翁莆煜, 陈明焌, 等. 多功能、宽量程GM计数管个人剂量仪的研制 ［J］. 辐射防护, 2004, 23(1): 1-7.
Li J, Weng P Y, Chen M J, et al. Development of gm tube electronic personal dosimeter with wide range and multi-purposes. Radialization Protection. ［J］. Radialization Protection , 2004, 23(1): 1-7.
［2］ 龚军军, 陈君军, 夏文明. GM计数管量程扩展技术进展 ［J］. 核电子学与探测技术, 2013, 33(4): 476-479.
Gong J J, Chen J J, Xia W M, et al. Progress on Range Extension Technique of GM Tube ［J］. Nuclear Electronics & Detection Technology , 2013, 33(4): 476-479.
［3］ 李继源, 张皓, 来永芳. GM计数管的发展与现状 ［C］// 全国核监测学术会议. 1999.
［4］ 岳清宇, 王文海, 金花. G-M计数管用于环境γ辐射监测 ［J］. 辐射防护, 1999(2): 132-134.
Yue Q Y, Wang W H, Jin H, et al. Monitoring for environmental γ radiation using G-M counter ［J］. Radialization Protection , 1999(2): 132-134.
［5］ 王国荣, 李岩, 马永和, 等. G-M计数管用作辐射剂量测量应解决的问题 ［J］. 核电子学与探测技术, 2011, 31(9): 1014-1017.
Wang G R, Li Y, Ma Y H, et al. Problems for measuring radiation dose using g-m counter ［J］. Nuclear Electronics & Detection Technology , 2011, 31(9): 1014-1017.
［6］ 倪宁. 高气压电离室微弱电流信号测量技术研究 ［D］. 成都:成都理工大学, 2013.
［7］ 黄平, 方方, 张友德, 等. PIN硅光二极管在n/γ混合辐射场中的探测技术研究 ［J］. 核电子学与探测技术, 2011, 31(12): 1341-1344.
Huang P, Fang F, Zhang Y D, et al. The detection technology of pin silicon photodiode applied in the n/γ mixed radiation field ［J］. Nuclear Electronics & Detection Technology , 2011, 31(12): 1341-1344.
［8］ 黄建微, 王乃彦. 基于蒙特卡罗方法的NaI探测器效率刻度及其测量轫致辐射实验 ［J］. 物理学报, 2014, 63(18):180702-1-180702-7.
Huang J W, Wang N Y. Efficiency calibration for a NaI scintillation detector based on Monte-Carlo pro cess and preliminary measurements of bremsstrahlung ［J］. Acta Physica Sinica , 2014, 63(18):180702-1-180702-7.
［9］ 何小安, 李朝光, 易荣清, 等. 基于单光子计数的NaI(Tl)闪烁探测器灵敏度标定方法 ［J］. 强激光与粒子束, 2014, 27(3). 03202-1-03202-5.
He X A, Li C G, Yi R Q, et al. Sensitivity calibration of NaI(Tl) scintillator based on single photon counting ［J］. High Power Laser and Particle Beams , 2014, 27(3). 03202-1-03202-5.
［10］ 王文炜. 蒙特卡罗方法在GM计数管优化设计中的应用研究 ［D］. 衡阳:南华大学, 2014.
［11］ 李德红, 黄成伟, 吴慧利, 等. 低空气比释动能率γ射线参考辐射场的刻度方法 ［J］. 计量学报, 2011, 32(z1): 18-21.
Li D H, Huang C W, Wu H L, et al. Calibration Method of y-ray Reference Radiation Field with Low Air Kerma Rate［J］. Acta Metrologica Sinica , 2011, 32(z1): 18-21.
［12］ 赵瑞, 吴金杰, 樊松, 等. 环境水平X射线辐射质的建立及监测仪表校准方法研究 ［J］. 计量学报, 2018, 39(z1): 131-136.
Zhao R, Wu J J, Fan S, et al. Establishment of Environmental Level X-ray Radiation Qualities and Research of the Calibration Methods of Monitoring Instruments［J］. Acta Metrologica Sinica,2018, 39(z1): 131-136.
［13］ 吕雅竹,赵瑞,李德红, 等. X射线剂量当量仪校准因子不确定度评估［J］. 计量学报,2020, 41(9): 1133-1137.
Lü Y Z, Zhao R,Li D H, et al. Uncertainty Evaluation of Calibration Factor for X-ray Dose Equivalent Instrument［J］. Acta Metrologica Sinica,2020, 41(9): 1133-1137.
［14］ 宋飞,赵瑞,丁卫撑, 等. X射线环境辐射监测仪器校准方法的研究［J］. 计量学报,2021, 42(9): 1237-1243.
Song F, Zhao R, Ding W C, et al. Research on Calibration Method of X-ray Environmental Radiation Monitoring Instrument［J］. Acta Metrologica Sinica,2021, 42(9): 1237-1243.
［15］ 王家伟,魏鹏,马伯轩,等.诊断X射线检测设备半值层测量结果的影响因素［J］. 计量科学与技术,2021, 65(8): 3-6.
Wang J W, Wei P, Ma B X, et al. Main Factors Affecting Measurement Results of the Half-value Layer of Diagnostic X-ray Testing Equipment［J］. Metrology Science and Technology, 2021, 65(8): 3-6.
［16］ 徐阳, 高飞, 肖雪夫, 等. 过滤X射线参考辐射场特性的蒙特卡罗模拟研究及实验验证 ［J］. 原子能科学技术, 2017, 51(9): 1691-1697.
Xu Y, Gao F, Xiao X F, et al. Study on Characteristic of Filtered X Ray Reference Radiation Field with Monte Carlo Method and Experimental Verification ［J］. Atomic Energy Science and Technology , 2017, 51(9): 1691-1697.
［17］ 苏宇航, 王倩妮, 何方成, 等. 工业CT坐标精密测量技术 ［J］. 计量学报, 2015, 36(4): 375-378.
Su Y H, Wang Q N, He F C, et al. A Survey on Precise Coordinate Measurement Technology by lndustrial X-ray Computed Tomography ［J］. Acta Metrologica Sinica , 2015, 36(4): 375-378.
［18］ 邹晶. 工业X射线CT成像有关问题研究 ［D］. 北京:首都师范大学, 2009.
［19］ 王义旭, 施玉书, 高思田, 等. 工业CT探测尺寸误差的校准及误差分析 ［J］. 计量学报. 2014, 35(3): 216-220.
Wang Y X, Shi Y S, Gao S T, et al. Caiibration and Anaiysis for Probing Size Error of industriai CT ［J］. Acta Metrologica Sinica , 2014, 35(3): 216-220.
2022, Vol. 43 
