基于HPGeγ谱仪的粉煤灰天然放射性测量  

Crude Radioactivity Measure of Coal Dust Based on HPGe γ-ray Spectrometer

作　　者：周春林[1] 过惠平[1] 韩峰[1] 徐振华[1] 吴勇[1] 

机构地区：[1]第二炮兵工程学院102室,陕西西安710025

出　　处：《核电子学与探测技术》2009年第2期305-308,共4页Nuclear Electronics & Detection Technology

摘　　要：介绍了高纯锗(HPGe)γ谱仪系统的结构组成和阱型反符合工作原理,利用谱仪测量了西安大唐热电集团5个粉煤灰样品中天然放射性核素含量,样品中238U2、26Ra2、32Th和40K核素的平均比活度分别为67.6 Bq.kg-1、79.5Bq.kg-1、72.7Bq.kg-1和190Bq.kg-1。依据中华人民共和国国家标准GB6566-2001,对其进行了比较分类,结果表明,样品中天然放射性核素水平均处于正常本底,属于A类建筑材料,应用范围不受限制。This paper introduced the composing and working principle of a low background anti-Compton HPGe T spectrometer, then measured the crude radioactivity of five coal dust samples that collected from DaTang thermoelectricity factory in Xi＇ an. The average contents of 235 U Z226Ra232 Th40K were 67.6 Bq/ kg,79. 5Bq/kg.72. 713q/kg and 190 Bq/kg. The result reveals that the radioactivity level of coal dust is at a normal level and the coal dust can be used as the A kind building materials according to national standard GB6566-2001, its application range has no limit.

关 键 词：HPGEΓ谱仪 粉煤灰 天然放射性 西安大唐热电集团 

分 类 号：TL84[核科学技术—核技术及应用] R144[医药卫生—公共卫生与预防医学]