Havelka Miroslav
Czech Metrology Institute, Inspectorate for Ionizing Radiation, Radiová 1, 102 00 Prague, Czech Republic.
Appl Radiat Isot. 2012 Sep;70(9):2051-5. doi: 10.1016/j.apradiso.2012.02.071. Epub 2012 Feb 25.
Since 2000 the software coincidence counting (SCC) system has been used for activity standardisation of about 15 radionuclides. Their activities were determined by the efficiency extrapolation method applied to 4π (PC)-γ coincidence. Some standardisations, mainly standardisations of EC-β(+) radionuclides, required optimal setting of coincidence parameters, for which new procedures based on "the coincidence to total PC count ratios", "a multiple gamma window combined from subwindows fractions" and "a source test for PC detection efficiency " were introduced. The paper summarises the development of SCC system related to findings from detailed analyses of recorded data. These findings are not practically achievable by a conventional approach.
自2000年以来，软件符合计数（SCC）系统已用于约15种放射性核素的活度标准化。它们的活度通过应用于4π（PC）-γ符合的效率外推法来确定。一些标准化，主要是电子俘获β（+）放射性核素的标准化，需要对符合参数进行优化设置，为此引入了基于“符合与总PC计数比”、“由子窗口分数组合而成的多个γ窗口”和“PC探测效率的源测试”的新程序。本文总结了与记录数据分析的详细结果相关的SCC系统的发展情况。这些结果用传统方法实际上是无法实现的。
