灼烧温度对氡射气析出率的影响  

Effect of Heating Temperature on Emanation Coefficient of Rn

作　　者：庞荣华[1] 童纯菡[2] 刘晓辉[2] 

机构地区：[1]四川省辐射环境管理监测中心站,四川成都610031 [2]成都理工大学应用核技术与自动化工程学院,四川成都610059

出　　处：《核化学与放射化学》2005年第1期61-64,共4页Journal of Nuclear and Radiochemistry

摘　　要：通过了解锆英砂、铀矿粉、石英砂 铀矿粉混合物等含铀地质材料中222 Rn的析出情况,探索了降低这些材料中氡射气析出率的方法,并应用灼烧法研究了灼烧温度对上述材料中氡射气析出率的影响。实验结果表明,上述地质材料的氡射气析出率随灼烧温度升高而减小。灼烧法是一种有效降低氡射气析出率的方法,可作为对氡射气及放射性子体的防护手段加以利用。For developing a method to reduce the emanation coefficient of Rn in materials, emanation coefficient of Rn in geological uranous materials such as zircon, uranium-bearing ore, etc is measured. Heating is used to study the effect of heating temperature on emanation coefficient of Rn. The results show after heating, the emanation coefficient of Rn in above materials decreases gradually according to the heating temperature increasing. Heating can reduce the emanation coefficient of Rn effectively, which can be used as a new measure to defend against radon and radon daughters.

关 键 词：灼烧法 氡射气析出率 含铀材料 

分 类 号：X591[环境科学与工程—环境工程]