Keightley, J D; Bobin, C*; Bouchard, J*; Capogni, M*; Loreti, S*; Roteta, M* (2013) Recent advances in digital coincidence counting for radionuclide metrology. In: 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA)., 23-27 June 2013, Marseille, France.

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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 (4pb-g 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 10^8 to 10^9 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" 4pb-g digital coincidence counting systems.

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Keywords:	4pb-g coincidence counting, digital coincidence counting, digital signal processing, radionuclide metrology, list-mode acquisition
Subjects:	Ionising Radiation Ionising Radiation > Radioactivity
Identification number/DOI:	10.1109/ANIMMA.2013.6728057
Last Modified:	02 Feb 2018 13:14
URI:	http://eprintspublications.npl.co.uk/id/eprint/6086

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