活性炭-γ谱法测量氡析出率时泄漏和反扩散影响研究  

STUDY OF THE LEAKAGE AND BACK DIFFUSION EFFECT IN MEASURING RADON EXHALATION RATE BY THE ACTIVATED CHARCOAL ABSORPTION-γ ENERGY SPECTRUM METHOD

作　　者：刘良军[1] 周剑良[1] 侯翠梅[1] 

机构地区：[1]南华大学氡实验室,湖南衡阳421001

出　　处：《辐射防护》2007年第3期141-144,150,共5页Radiation Protection

基　　金：湖南省科技厅重点资助项目(05FJ2003)

摘　　要：本文通过实验证明了用活性炭-γ谱法测疏松介质表面的氡析出率时,由于受泄漏和反扩散的影响,会低估实际的氡析出率,其低估程度与被测量介质表面性质和活性炭法的取样条件有关。The leakage and back diffusion has an effect on measurement of radon exhalation rote when the activated charcoal absorption-γ energy spectrum method is used. It has been proved by the experiment. It is possible that radon exhalation rates measured are less than the actual ones. And the degree of the difference is related to the properties of medium surface and sampling condition.

关 键 词：氡析出率 活性炭 泄漏 反扩散 

分 类 号：TL817[核科学技术—核技术及应用]