测氡仪标准仪器校准法的可行性研究

针对目前台站测氡仪校准困难的问题，提出标准仪器校准法，并将其与RN-FD循环式氡气固体源进行对比，同时利用台站应用最为广泛的RN-150小型氡气固体源验证该方法的可行性。结果表明，利用RN-150小型氡气固体源及AlphaGUARD P2000F标准仪器分别对FD-125测氡仪3个闪烁室进行校准后得到的校准系数相对误差分别为0.2%、3.4%、2.8%，均达到目前地震监测中氡观测的技术要求，进一步验证了测氡仪标准仪器校准法的可行性。

Feasibilit Study on the Calibration Method of Standard Instrument for Emanometer

In view of emanometer calibration difficulty present in earthquake stations, we advance a standard instrument calibration method for emanometer, compare it with RN-FD circulating radon gas solid source, and use RN-150 small radon gas solid source, which is the most widely used gas in current stations, to verify the feasibility of this method. The results show that the three scintillation chambers of FD-125 emanometer are calibrated by using RN-150 small radon gas solid source and AlphaGUARD P2000F emanometer; the relative deviations of the calibration coefficient are 0.2%, 3.4% and 2.8%, meeting the technical requirements of radon observation in seismic monitoring, verifing that the standard instrument calibration method is feasible.