Development of high sensitivity radon detectors
Development of high sensitivity radon detectors
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DOI：
10.1016/s0168-9002(98)01204-2
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发表时间：
1999-01-21
影响因子：
1.4
通讯作者：
Okazawa, H
中科院分区：
文献类型：
--
作者：
Takeuchi, Y;Okumura, K;Okazawa, H
空气和水中氡的高灵敏度探测器已经研制成功。我们使用静电收集和PIN光电二极管作为这些探测器。还建立了校准系统，以获得收集系数。作为校准研究的结果，在小于1.6g/m(3)的区域内，可以清楚地观察到氡探测器对空气的绝对湿度依赖性。该测氡仪对空气的刻度系数为2.2。+/-0.2(次/天)/(MBq/m(3))在0.08 g/m(3)和0.86+/-0.06(次/天)/(MBq/m(3))在11 g/m(3)。测氡仪对水的校准系数为3.6+/-0.5(次/天)/(MBq/m(3))。空气氡探测器的本底水平为每天2.4+/-1.3次。因此，在0.08g/m(3)的一天测量中，空气氡探测器本底以上信号的标准差应为1.4mBq/m(3)。(C)1999 Elsevier Science B.V.保留所有权利。
High sensitivity detectors for radon in air and in water have been developed. We use electrostatic collection and a PIN photodiode for these detectors. Calibration systems have been also constructed to obtain collection factors. As a result of the calibration study, the absolute humidity dependence of the radon detector for air is clearly observed in the region less than about 1.6 g/m(3). The calibration factors of the radon detector for air are 2.2. +/- 0.2 (counts/dayM)/(mBq/m(3)) at 0.08 g/m(3) and 0.86 +/- 0.06 (counts/day)/(mBq/m(3)) at 11 g/m(3). The calibration factor of the radon detector for water is 3.6 +/- 0.5 (counts/day)/(mBq/m(3)). The background level of the radon detector for air is 2.4 +/- 1.3 counts/day. As a result, one standard deviation excess of the signal above the background of the radon detector for air should be possible for 1.4 mBq/m(3) in a one-day measurement at 0.08 g/m(3). (C) 1999 Elsevier Science B.V. All rights reserved.