期刊文献+

应用手持式γ核素识别仪检测石材放射性的方法

A method on measurement radioactive nuclide in stone by using handheld gamma radio-isotope identifiers
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摘要 手持式γ核素识别仪经能量与效率刻度后,可在简易的铅屏蔽室中对未粉碎的石材样品作γ能谱测量,快速检测样品中226Ra、232Th、40K的含量。试验结果显示,与低本底高纯锗γ能谱仪测量结果相比较,最大偏差分别为25.1%(226Ra)、21.4%(232Th)、16.5%(40K),符合环境样品放射性测量不确定度的预期。 Using energy and efficiency calibrated handheld γ radioisotopeidentifiers to measure specific activity of 226Ra、232Th、40K rapidly in stone sample inside a simple lead chamber. The testingresults show that the maximum deviations are 25.1%(226Ra)、21.4%(232Th)、16.5%(40K) respectively, compared with a low backgroundhigh-purity germanium gamma spectrometry,. This method of measuringenvironmental sample by handheld γ radio-isotope identifiers meet therequirement of uncertainty expectation in radioactive measurement.
出处 《上海计量测试》 2014年第6期11-12,共2页 Shanghai Measurement and Testing
基金 国家质检总局科技计划项目(2013QK130)
关键词 手持式γ核素识别仪 Γ能谱 比活度 石材 handheld gamma radio-isotope identifiers gamma spectrum specific activity stone
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