一种借助液体闪烁计数进行二级标准测量的新方法。
A new method for secondary standard measurements with the aid of liquid scintillation counting.
作者信息
Kossert K
机构信息
Physikalisch-Technische Bundesanstalt (PTB), Department 6.1, Bundesallee 100, D-38116 Braunschweig, Germany.
出版信息
Appl Radiat Isot. 2006 Oct-Nov;64(10-11):1459-64. doi: 10.1016/j.apradiso.2006.02.060. Epub 2006 Mar 22.
A new secondary standard measuring procedure based on liquid scintillation counting has been developed at PTB. In this procedure, the efficiency curve, i.e. the counting efficiency of the nuclide to be investigated as a function of the tritium counting efficiency, is-in contrast to the CIEMAT/NIST method-not calculated but determined by experiment. For the measurements, gamma-emitting activity standards are used which were calibrated by other methods. The procedure was successfully used to calibrate solutions of the radionuclides 54Mn, 57Co, 65Zn, 85Sr and 125I with small uncertainties.
德国物理技术研究院（PTB）开发了一种基于液体闪烁计数的新二级标准测量程序。在此程序中，与CIEMAT/NIST方法不同，效率曲线，即待研究核素的计数效率作为氚计数效率的函数，不是通过计算得出，而是通过实验确定。对于测量，使用通过其他方法校准的γ发射活度标准。该程序已成功用于校准放射性核素54Mn、57Co、65Zn、85Sr和125I的溶液，不确定度较小。
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