氡钍子体测量中滤膜自吸收系数的测定

摘要

为更加高效、精准地测量氡钍子体浓度，探讨了一种测定氡钍子体测量中滤膜自吸收系数的新方法。该方法在不更换滤膜的基础上引入了活度累积函数，计算得出了连续测量过程中的测量次数与滤膜自吸收系数的关系，以及滤膜的自吸收系数与使用次数的关系。%For more efficient and accurate measurement of radon and thorium plasma concentration , this paper discusses a measurement in the determination of un -equilibrium radon and thorium membrane from a new method for absorption coefficient .On the basis of this method without replacing filter membrane activity accu-mulation function is introduced .By calculated and designed experiment , the membrane filter is used in a num-ber of measurements in the process of continuous measurements , the relationship between membrane absorption coefficient and the number in the continuous measurements and the relationship between the absorption coeffi -cient and the number of membrane usage are obtained .