Recent advances in digital coincidence counting for Radionuclide Metrology

Abstract : The radioactivity measurement techniques developed within the EURAMET EMRP 'MetroFission' Joint Research Project, were aimed at performing on-site activity measurements at the primary standard level (4πβ-γ coincidence counting) for a wide range of radionuclides utilizing recent advances in high-speed digital sampling and digital signal processing. The state-of-the-art technology employed within this project provides up to 14-bit digitizer systems operating with sampling rates in the order of 108 to 109 samples-per-second, incorporating on-board FPGA devices, which greatly enhances the application of digital signal processing for the implementation of digital coincidence counting. These devices when coupled to suitable analysis software, demonstrate a significant improvement in the provision of primary standards of radioactivity. This manuscript provides a description of the systems employed, along with recommendations regarding optimization of the digital sampling of signals from photo-multiplier tubes and pre-amplifiers and compare the benefits of 'off-line' versus 'on-line' 4πβ-γ digital coincidence counting systems.
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Submitted on : Monday, June 25, 2018 - 7:58:21 AM
Last modification on : Monday, May 13, 2019 - 11:15:37 AM

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J. Keightley, C. Bobin, J. Bouchard, M. Capogni, S. Loreti, et al.. Recent advances in digital coincidence counting for Radionuclide Metrology. 2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA), Jun 2013, Marseille, France. pp.06728057, ⟨10.1109/ANIMMA.2013.6728057⟩. ⟨cea-01822344⟩

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