【作者】 廖力夫； 杜楠； 肖拥军； 肖锡林； 林英武； 聂长明；

【Author】 LIAO Li-fu~1,DU Nan~1,XIAO Yong-jun~2,XIAO Xi-lin~1, LIN Ying-wu~1,NIE Chang-ming~1 (1.College of Chemistry and Chemical Engineering, University of South China,Hengyang of Hunan Prov.421001,China; 2.College of Nuclear Science and Technology,University of South China, Hengyang of Hunan Prov.421001,China)

【机构】 南华大学化学化工学院； 南华大学核科学技术学院；

【摘要】 目的:建立应用磁弹性传感器无线传感法测定γ射线辐射剂量的方法。方法:基于γ射线可引发丙烯酰胺(AM)发生聚合反应,从而导致溶液粘度发生变化,而溶液粘度的变化可由磁弹性传感器进行检测的事实而建立相应的方法。磁弹性传感技术具有能无线检测磁弹性片的共振频率变化的独特性质,这种共振频率变化对应于磁弹性片所浸入溶液粘度的变化。通过共振频率的变化可对γ射线的辐射剂量进行定量测定。结果:在适宜的条件下共振频率的频移与辐射剂量呈线性关系,测定范围为0-50 Gy,检出限为0.25 Gy。应用本方法测定了实际环境中γ射线的辐射剂量,结果令人满意。结论:本方法可实时、连续、原位监测γ射线的辐射剂量。更多还原

【Abstract】 A wireless sensing method for the measurement of gamma radiation dose has been developed based on the facts that gamma ray can initiate the polymerization of acrylamide to form polymer,resulting in the increase of solution viscosity,and that the viscosity can be determined with a wireless magnetoelastic sensor.The magnetoelastic sensor technique has the unique characteristics of being able to wirelessly detect resonance frequency shifts of a magnetoelastic foil in response to differences in the solution viscosity.A linear relationship between the resonance frequency shift and gamma radiation dose in a range of 0 to 50 Gy was given under optimal conditions with a detection limit of 0.25 Gy. This method has the advantage of real-time,continuous and in situ measurement.The proposed method was applied successfully for the determination of gamma radiation dose in real environments with satisfactory results.更多还原