| 氡钍分析仪水氡观测最佳工作状态 |
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| 引用本文： | 樊春燕,陈华静,王艳.氡钍分析仪水氡观测最佳工作状态[J].地震地磁观测与研究,2017,38(3):134-139. |
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| 作者姓名： | 樊春燕 陈华静 王艳 |
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| 作者单位： | 1.中国北京 100045 中国地震台网中心;2.中国石家庄 050021 河北省地震局 |
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| 基金项目： | 全国地下流体物理量观测台网产出（项目编号：1640410320103） |
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| 摘 要： | 中国水氡观测历经50余年,观测仪器老化严重。2011年至今分别引入新生产的3批次64套FD-125型氡钍分析仪。经过仪器测试、地震台站运行以及多次现场实验,发现:该仪器定标器阈值不应按照地震水文地球化学观测技术规范选定的2 V,需选择0.7 V甚至更低阈值,才能保证测值的可靠稳定,保障水氡观测继续发挥防灾减灾作用。
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| 关 键 词： | 水氡观测 阈值 工作高压 |
The application of the new radon-thoron analysis instrument in dissolved radon monitoring |
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| Fan Chunyan,Chen Huajing,WangYan.The application of the new radon-thoron analysis instrument in dissolved radon monitoring[J].Seismological and Geomagnetic Observation and Research,2017,38(3):134-139. |
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| Authors: | Fan Chunyan Chen Huajing WangYan |
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| Institution: | 1.China Earthquake Networks Center, Beijing Municipality 100045, China;2.Hebei Earthquake Agency, Shijiazhuang 050021, China |
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| Abstract: | Radon is inert gas of radioactive decay arising from the rock and soil of crust, which mainly contain the precursors of earthquakes. The problems of instruments aging in dissolved radon monitoring have become more serious in the near days during the continued using over 40 years. 64 sets of FD-125 radon and thorium analytical instrument have been introduced by the projects of background field and Instrument renewal and transformation. We carried on several factory testing and fled experiments in observation stations. The test results show that, on the condition of a relatively low threshold (eg, 0.5 V, or even lower) of the scalar, the results are more stable and reliable. In the conditional case, after choosing suitable threshold, the measurement of high-voltage plateau curve may carry out using radium source or radon gas source. In this process, special attention is being given to avoid light in daily maintenance. |
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| Keywords: | observation of dissolved radon threshold value high-voltage |
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