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A high-resolution β−γ coincidence spectrometry system for radioxenon measurements

Goodwin, M.A, Britton, R., Davies, A.V., Bell, S.J., Collins, S.M and Regan, P.H (2020) A high-resolution β−γ coincidence spectrometry system for radioxenon measurements Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 978, 164452.

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Abstract

GBL15, the UK’s noble gas certified Comprehensive Nuclear-Test-Ban Treaty (CTBT) radionuclide laboratory supports the International Monitoring System (IMS) through measurement of environmental radioxenon samples using coincidence spectrometry. GBL15 currently utilises a system comprised of NaI(Tl) -detectors and plastic scintillator -detectors to measure coincident emissions from the four radioxenon isotopes of interest: Xe, Xe, Xe and Xe. This paper reports on the setup, calibration and assessment of the CEA/Mirion-developed PIPSBox, used in coincidence setup with a high-purity germanium detector. The system has been configured to measure the signals from the four radionuclides of interest and demonstrates improved discrimination between signals and less interference compared to the current system. The coincident detection efficiencies are quantified through measurement of spiked radioxenon samples.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Goodwin, M.Am.goodwin@surrey.ac.uk
Britton, R.
Davies, A.V.
Bell, S.J.
Collins, S.Msean.collins@surrey.ac.uk
Regan, P.HP.Regan@surrey.ac.uk
Date : 24 July 2020
Funders : UK Ministry of Defence (MoD), Science & Technologies Facilities Council (STFC), UK Department of Business, Energy and Industrial Strategy (BEIS)
DOI : 10.1016/j.nima.2020.164452
Copyright Disclaimer : Crown Copyright © 2020 Published by Elsevier B.V. All rights reserved.
Uncontrolled Keywords : Radioxenon; Noble gas; CTBT; Radionuclide; Verification; IMS; Xenon; Beta–gamma; Coincidence; Spectrometry; High resolution;
Additional Information : Embargo OK Metadata OK No Further Action
Depositing User : James Marshall
Date Deposited : 05 Aug 2020 10:26
Last Modified : 05 Aug 2020 10:32
URI: http://epubs.surrey.ac.uk/id/eprint/858358

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