液体闪烁计数法是常用的核辐射测量方法之一。由于其制样简单、测量灵敏度高及稳定性好等特点，该方法在大范围氡浓度调查等方面的应用引起人们的重视。本文根据氡易溶于闪烁液的这一特点，利用常用的三种闪烁液进行实验，研究表明，采样流率、时间及温度对氡在闪烁液中的溶解度系数有影响。实验得出了氡在空气与闪烁液中分配平衡时间，建立了溶解度系数的温度函数，得到液体闪烁计数准确测量氡浓度的方法。%The liquid scintillation counting method is one of the commonly used nuclear radiation measurement, It has many advantages such as simple sample preparation, high sensitivity and good stability in the measure-ment.This method has caught people′s attention in a wide range of radon survey.According to the characteris-tics of radon soluble in liquid scintillation, Using three kinds of liquid scintillation which were commonly used to experiment, Studies have shown that sampling flow rate, time and temperature have influence on radon solu-bility in the liquid scintillation.Experiment got the balance time of radon distribution between the air and liquid scintillation, established the liquid scintillation counting method for accurate measurement of radon concentra-tion.
展开▼
