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Investigation into the potential of GAGG:Ce as a neutron detector

Taggart, M.P., Nakhostin, M. and Sellin, P.J. (2019) Investigation into the potential of GAGG:Ce as a neutron detector Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 931. pp. 121-126.

Investigation into the potential of GAGG-Ce as a neutron detector.pdf - Accepted version Manuscript

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In this work we investigate the potential use as a thermal neutron detector of cerium-doped gadolinium aluminium gallium garnet (GAGG:Ce) coupled to a silicon photomultiplier (SiPM). The response to thermal neutrons has been measured, with two strong low energy neutron-indicative peaks clearly identifiable below 100 keV and additional γ peaks at higher energies. The neutron-related peaks are produced by a combination of contributions from excited states of the two isotopes 156Gd and 158Gd which can be clearly resolved in our GAGG scintillation detector. In particular, two peaks due to neutron-induced γ-ray emission are observed at approximately 82 keV and 260 keV, with best achieved energy resolutions of 24.1 ± 0.2% and 22.7 ± 0.7% respectively. Three different scintillator volumes (0.1 cm3, 0.4 cm3, and 1 cm3) were investigated and the respective results for each configuration will be presented.

Our findings show that a GAGG-SiPM based detector can be used as a compact, efficient thermal neutron detector in a low γ-ray contamination environment.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Date : 1 July 2019
DOI : 10.1016/j.nima.2019.04.009
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Neutron detection; GAGG:Ce; Silicon photomultiplier
Depositing User : Clive Harris
Date Deposited : 17 May 2019 08:19
Last Modified : 12 Apr 2020 02:08

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