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Issue 41, 2017
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Large irradiation doses can improve the fast neutron/gamma discriminating capability of plastic scintillators

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Abstract

When new materials appear as potential alternatives for radiation detection, several criteria have to be fulfilled. The one presented herein is the response variation to large irradiation doses of neutron/gamma discriminating plastic scintillators. Thus, several samples were exposed to high gamma doses reaching 10 kGy. They were characterized in terms of gamma spectrometry and fast neutron/gamma discrimination, prior to and after irradiation. Results show an unexpected increase of the figure of merit (FoM), which is the numerical value for n/γ discrimination performances. An in-depth investigation evaluates the physicochemical impact of such large doses within the material. The characterization includes photophysics, radiation/matter interaction and chemical analyses (EPR, 1H NMR, fluorescence spectroscopy and HRMS).

Graphical abstract: Large irradiation doses can improve the fast neutron/gamma discriminating capability of plastic scintillators

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Publication details

The article was received on 15 Jun 2017, accepted on 26 Sep 2017 and first published on 11 Oct 2017


Article type: Paper
DOI: 10.1039/C7CP04034B
Citation: Phys. Chem. Chem. Phys., 2017,19, 28105-28115
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    Large irradiation doses can improve the fast neutron/gamma discriminating capability of plastic scintillators

    E. Montbarbon, M. Amiot, D. Tromson, S. Gaillard, C. Frangville, R. Woo, G. H. V. Bertrand, R. B. Pansu, J. Renaud and M. Hamel, Phys. Chem. Chem. Phys., 2017, 19, 28105
    DOI: 10.1039/C7CP04034B

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