Algorithm development for low level radioxenon 2D spectra analysis: A first case of study using spectral unmixing for a β-γ detector

In the scope of the verification regime of the Comprehensive nuclear Test Ban Treaty, the CEA/DAM is developing new β-γ measurement systems. In order to improve the analysis methods at low statistics, a new multiplicative spectral unmixing algorithm for full-spectrum analysis was tested on a particu...

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Bibliographic Details
Published in:Applied radiation and isotopes 2024-01, Vol.203, p.111079-111079, Article 111079
Main Authors: Mano, C.P., Chapelle, C., Kabakian, A. Der Mesrobian, Gross, P., Paradis, H., Delaune, O., Patryl, L.
Format: Article
Language:English
Subjects:
Gamma-ray spectrometry
Radioxenon
Unmixing
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Summary:In the scope of the verification regime of the Comprehensive nuclear Test Ban Treaty, the CEA/DAM is developing new β-γ measurement systems. In order to improve the analysis methods at low statistics, a new multiplicative spectral unmixing algorithm for full-spectrum analysis was tested on a particular setup for different types of mixtures. The reconstructed activities for simulated spectra and the characteristic limits found with this algorithm are compared to the classic ROI analysis method. •Spectral unmixing for gamma-ray spectrometry.•Low-level radioxenons spectrometry.•Maximum likelihood for poisson distributions.•Decision thresholds and detection limits improvements at low statistics.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2023.111079