Bobin C, Bouchard J, Censier B
CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), Gif-sur-Yvette, France.
Appl Radiat Isot. 2010 Jul-Aug;68(7-8):1519-22. doi: 10.1016/j.apradiso.2009.11.067. Epub 2009 Dec 2.
This paper describes the first step in the development of a digital platform dedicated to primary radionuclide measurements. In order to validate the implementation of an on-line processing based on extendable dead-times, a FPGA-based digital system has been programmed for liquid scintillation counting. After a description of the hardware, TDCR (Triple to Double Coincidence Ratio) measurements are presented. Comparisons of activity measurements with the classical system operating at LNHB are used to validate the new system; coincidence counting differences observed when increasing the resolving time in the digital platform are discussed.
本文描述了致力于初级放射性核素测量的数字平台开发的第一步。为了验证基于可扩展死时间的在线处理的实现，已为液体闪烁计数对基于现场可编程门阵列（FPGA）的数字系统进行了编程。在描述硬件之后，给出了三重到双重符合比（TDCR）测量结果。将活性测量结果与在法国国家计量与测试实验室（LNHB）运行的传统系统进行比较，以验证新系统；讨论了在数字平台中增加分辨时间时观察到的符合计数差异。
