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

C P Mano; C Chapelle; A Der Mesrobian Kabakian; P Gross; H Paradis; O Delaune; L Patryl

doi:10.1016/j.apradiso.2023.111079

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

Appl Radiat Isot. 2024 Jan:203:111079. doi: 10.1016/j.apradiso.2023.111079. Epub 2023 Oct 21.

Authors

C P Mano¹, C Chapelle², A Der Mesrobian Kabakian², P Gross², H Paradis², O Delaune², L Patryl²

Affiliations

¹ Atomic Energy and Alternative Energies Commission, DAM DIF, F-91297, Arpajon, France. Electronic address: charlesphilippe.mano@cea.fr.
² Atomic Energy and Alternative Energies Commission, DAM DIF, F-91297, Arpajon, France.

PMID: 37951035
DOI: 10.1016/j.apradiso.2023.111079

Abstract

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.

Keywords: Gamma-ray spectrometry; Radioxenon; Unmixing.