| 高灵敏闪烁室和氡气收集方法 |
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| 引用本文： | 马力军,朱天侠.高灵敏闪烁室和氡气收集方法[J].铀矿冶,1988(2). |
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| 作者姓名： | 马力军 朱天侠 |
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| 作者单位： | 北京铀矿选冶研究所
(马力军)，北京铀矿选冶研究所(朱天侠) |
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| 摘 要： | 研究了一种容积为75ml的高灵敏的闪烁室,其探测效率～82％,本底计数率～0.09计数/min。研究提出了加温减压收集氡气的方法,从50ml射气管里收集氡气的回收率为99％。用该闪烁室和加温减压收集氡气的方法分析水中~(226)Ra,灵敏度可提高2—4倍,因而,在相同的测定条件下可明显地减少取样量。
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| 关 键 词： | 闪烁室 收集氡气 |
A HIGH-SENSITIVE SCINTILLATION CHAMBER AND METHOD FOR COLLECTION OF RADON BY HEATING AND DEPRESSURIZING |
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| Ma Lijun Zhu Tianxia.A HIGH-SENSITIVE SCINTILLATION CHAMBER AND METHOD FOR COLLECTION OF RADON BY HEATING AND DEPRESSURIZING[J].Uranium Mining and Metallurgy,1988(2). |
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| Authors: | Ma Lijun Zhu Tianxia |
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| Affiliation: | Beijing Research Institute of Uranium Ore Processing |
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| Abstract: | A high-sensitive scintillation chamber of 75 ml in volume with detection efficiency~82% and background counting rate~0.09 cpm has been developed. A method for collection of radon by heating and depressurizing is proposed and the recovery of radon collected from a 50ml bubbling tube reaches 99%. The content of 226Ra in environmental water is determined using the scintillation chamber and the method for collecting radon.In this way the analytical sensitivity of 226Ra can increase 2 to 4 times as compared with that of the conventional emanation-scintillation chamber method used at home recently, so the sample amount of environmental water for determining 226Ra can be considerably decreased in the same analytical conditions. |
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| Keywords: | Scintillation chamber Collection of radon |
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