Title: Application of Digital Signal Processing Algorithms for Nuclear Particle Spectroscopy
Citation: Bulletin of the Russian Academy of Sciences: Physics vol. 73 no. 4 p. 506-511
Publisher: Allerton Press, Inc.
Publication Year: 2009
JRC N°: JRC44035
ISSN: 1062-8738
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC44035
DOI: 10.3103/S1062873809040169
Type: Articles in periodicals and books
Abstract: Digital signal processing algorithms for nuclear particle spectroscopy are described along with a digital pile-up elimination method applicable to equidistantly sampled detector signals pre-processed by a charge-sensitive preamplifier. The signal processing algorithms are provided as recursive one- or multi-step procedures which can be easily programmed using modern computer programming languages. The influence of the number of bits of the sampling analogue-to-digital converter to the final signal-to-noise ratio of the spectrometer is considered. Algorithms for a digital shaping-filter amplifier, for a digital pile-up elimination scheme and for ballistic deficit correction were investigated using a high-purity germanium detector. The pile-up elimination method was originally developed for fission fragment spectroscopy using a Frisch-grid back-to-back double ionisation chamber and was mainly intended for pile-up elimination in case of high alpha-radioactivity of the fissile target. The developed pile-up elimination method affects only the electronic noise generated by the preamplifier. Therefore, the influence of the pile-up elimination scheme on the final resolution of the spectrometer is investigated in terms of the distance between piled-up pulses. The efficiency of the developed algorithms is compared with other signal processing schemes published in literature.
JRC Directorate:Health, Consumers and Reference Materials

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