摘要
采用两次载带、双夹馅制样的ＺｎＳ（Ａｇ）内闪法，可以对液体样品进行总α活度的４π绝对测量。对钚－２４０示踪溶液的模拟测量得到准确度：－０．１％，精密度：±０．２１％。校正系数的试验检验表明，探测效率：９９．３％，总不确定度：±０．７％。方法的特点是使用一般技术性能的通用仪表，配合放化制样方法的改进，即能获得较好质量的数据。
The method of increasing the measurement efficiency can be reached by mixing the samples directly with ZnS(Ag),which allows carriers to be used in two circles and prepares the double sliced samples. This becomes 4π absolute measuring method of a--total activity in solution. A simulating measurement for the Pn--240 tracer solution got a good result:the accuracy is --0. 1 % and the precision is ±0. 21 %.The method takes advantage of common instruments, combining the improvement of preparing the radiochemical sample method. Good data can be gotten by this measurement.The correctness factors of the whole method are checked by experiments:the 4π detecting efficiency is 99. 9% and the total uncertainty is ±0. 7%.
出处
《铀矿冶》
CAS
1996年第2期99-104,共6页
Uranium Mining and Metallurgy
关键词
α活度
绝对测量
4π立体角
内闪法
夹馅样品
α-activity
Absolute measurement
4πsolid angle
inner scintillation method
Stuffed sample of ZnS(Ag)
