An Ionization Chamber Using A Magnetically Suspended Electrode And Its Application To Environmental Radiation Monitoring
An Ionization Chamber Using A Magnetically Suspended Electrode And Its Application To Environmental Radiation Monitoring
复制标题
磁悬浮电极电离室及其在环境辐射监测中的应用
DOI：
10.1109/nssmic.1990.693380
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Y. Mori
中科院分区：
文献类型：
--
作者：
E. Tanaka;K. Koike;Y. Mori
研制了一种用于环境辐射监测的高灵敏度电离室。离子收集电极通过磁力悬浮而不使用所有绝缘体，使得腔室不受绝缘体引起的背景电流（例如漏电流和压电性）的影响。电极周期性地（每小时）复位，并且通过检测流过复位触点的电荷量来测量电离电流。实验表明，该电离室可用于监测环境γ射线剂量（当电离室关闭时）或空气中氡浓度（当电离室打开时）。电离电流的最小可检测量级约为10/sup-17/。A、当电极每小时复位时。>
A high-sensitivity ionization chamber has been developed for environmental radiation monitoring. The ion-collecting electrode is suspended by magnetic force without using all insulator so that the chamber is free from background current (such as leakage current and piezoelectricity) caused by the insulator. The electrode is reset periodically (every hour), and the ionization current is measured by detecting the amount of charge which flows through the reset contact. Experiments show that the chamber is useful for monitoring environmental gamma-ray dose (when the chamber is closed) or radon concentration in air (when the chamber is opened). The minimum detectable magnitude of ionization current is about 10/sup -17./ A, when the electrode is reset every hour. >