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Article Dans Une Revue Applied Radiation and Isotopes Année : 2020

Spectral unmixing applied to fast identification of γ-emitting radionuclides using NaI(Tl) detectors

Résumé

Spectral unmixing was investigated for fast spectroscopic identification in γ-emitter mixtures at low-statistics in the case of measurements performed to prevent illegal nuclear material trafficking or for in situ environmental analysis following a radiological or nuclear accident. For that purpose, a multiplicative update algorithm based on full-spectrum analysis was tested in the case of a 3″x3″ NaI(Tl) detector. Automatic decision-making was addressed using Monte Carlo calculations of decision thresholds and detection limits. The first results obtained with a portable instrument equipped with a 3″x3″ NaI(Tl) detector designed for the control of food samples by non-expert users following a radiological or nuclear accident, are also presented.
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Dates et versions

hal-03433598 , version 1 (04-02-2022)

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Hugues Paradis, Christophe Bobin, J. Bobin, Jacques Bouchard, Valérie Lourenço, et al.. Spectral unmixing applied to fast identification of γ-emitting radionuclides using NaI(Tl) detectors. Applied Radiation and Isotopes, 2020, 158, pp.109068. ⟨10.1016/j.apradiso.2020.109068⟩. ⟨hal-03433598⟩
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