【摘要】 目的定性研究静电对被动累积式固体核径迹氡浓度测量的影响。方法利用感应起电机分别给测氡杯的结构材料和探测元件CR-39加上不同电性和电量的静电,将五组带不同电性和电量的测氡杯同时放在一个标准氡室内开展刻度实验,分析比较不同组别测氡杯的刻度系数。结果较之于结构材料和CR-39元件均不带电的测氡杯,仅结构材料带正电时其刻度系数变化不明显,但结构材料带负电或CR-39元件带正电时其刻度系数降低了约40%,而CR-39元件带负电时其刻度系数升高了约1倍。结论在被动累积式固体核径迹测氡杯的刻度、保管和使用过程中,应尽量规避静电的发生。更多还原

【Abstract】 Objective To qualitatively study the effect of static electricity on radon measurements by using passive integrating radon monitors with solid-state nuclear detectors. Methods An electrostatic induction motor was used to produce different charges and amount of static electricity on the structural material or the CR-39 detectors. Calibration experiments for five groups of radon cups with different charges and amount of static electricity on the structural material or the CR-39 detectors were simultaneously performed in a standard radon chamber,and the results of calibration factors were compared and analyzed.Results Compared with the cup monitors without any electrical charge on the structural material or the CR-39,the calibration factor did not change obviously when the structural material was positively charged,but the calibration factor decreased about 40% when the structural material was negatively charged or the CR-39 detector was positively charged,and the factor would double when the CR-39 was negatively charged. Conclusion In the processes of calibration,storage or use of passive integrating radon monitors with solid-state nuclear detectors,the occurrence of static electricity should be avoided.更多还原