The Mobile Analyzer of Radioactive Gases OuTflows (MARGOT): A promising environmental xenon radionuclides detection system

V Thomas; O Delaune; G Le Petit; J P Fontaine

doi:10.1016/j.apradiso.2019.108820

The Mobile Analyzer of Radioactive Gases OuTflows (MARGOT): A promising environmental xenon radionuclides detection system

Appl Radiat Isot. 2019 Nov:153:108820. doi: 10.1016/j.apradiso.2019.108820. Epub 2019 Jul 24.

Authors

V Thomas¹, O Delaune², G Le Petit², J P Fontaine²

Affiliations

¹ CEA, DAM, DIF, F-91297, Arpajon, France. Electronic address: [email protected].
² CEA, DAM, DIF, F-91297, Arpajon, France.

PMID: 31382085
DOI: 10.1016/j.apradiso.2019.108820

Abstract

An ultra-compact and unshielded spectrometer for analysis of atmospheric xenon radionuclides has been developed: the MARGOT system. This system works at ambient temperature and high pressure, and has a 54.3 cm³ inner active volume. Atmospheric xenon radionuclide activities are determined with the electron-photon coincidence technique using both NaI(Tl) detectors and large pixellized Si-PIN detectors. The MARGOT system integrates an enhanced version of the PIPSBox™, Geant4 simulation and first calibration results are discussed.

Keywords: Cut-off energy; Geant4; Pixellized silicon wafer; Xenon radionuclide.