天然放射性核素α能谱测量原理  

The α-ray Spectrum Measuring Principle of Natural Radioactive Species

作　　者：丁卫撑[1,2] 王义[2] 黄洪全[1] 王敏[1] 

机构地区：[1]成都理工大学地学核技术四川省重点实验室,成都610059 [2]清华大学工程物理系粒子技术与辐射成像教育部重点实验室,北京100084

出　　处：《核电子学与探测技术》2010年第6期817-820,共4页Nuclear Electronics & Detection Technology

基　　金：教育部博士点专项科研基金(20060616010);铀矿资源勘查中α能谱测量技术研究

摘　　要：α能谱测量技术广泛应用于环境评价、资源勘查及地质构造勘查等领域。首先分析了天然放射性核素α能谱特性,然后详细论述了α能谱测量原理。根据天然α放射性核素的电学特性,通过增加电场来提高测量灵敏度,并完成了初步实验。最后,探讨了进行α能谱测量的信号调理电路的要求。The technique of α-ray spectrum measurement is widely used in the fields such as environmental assessment, resource exploration and geological prospecting etc.. Firstly, the α-ray spectrum characteristic of natural radioactive species is analyzed. And then the measuring principle of α-ray spectrum is discussed in detail. The electric field is used to increase the measurement sensitivity according to the electrical characteristics of the natural a radioactive species. And the preliminary experiment is completed. Finally, this paper discusses the request of signal conditioning circuit in α-ray spectrum measurement.

关 键 词：探测器 α能谱 Α衰变 测量 氡子体 吸附 

分 类 号：TL8[核科学技术—核技术及应用]