Large solubility of lithium carboxylates reaching high rates of 6Li incorporation in polystyrene-based plastic scintillators for fast/thermal neutron and gamma ray detection

6Li-Doped plastic scintillators (PSs) have been optimized as radioluminescent sensors for detection of fast/thermal neutrons and gamma rays for several purposes such as homeland security. Among 16 low molecular weight (C < 8) lithium carboxylates, Liα-valerate (LiαVal) exhibits high potential for...

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Veröffentlicht in:Materials chemistry frontiers 2019-01, Vol.3 (8), p.1626-1631
Hauptverfasser: Frangville, Camille, Hamel, Matthieu, Bertrand, Guillaume H V, Montbarbon, Eva, Grabowski, Amélie, Lynde, Clément
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Sprache:eng ; jpn
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Zusammenfassung:6Li-Doped plastic scintillators (PSs) have been optimized as radioluminescent sensors for detection of fast/thermal neutrons and gamma rays for several purposes such as homeland security. Among 16 low molecular weight (C < 8) lithium carboxylates, Liα-valerate (LiαVal) exhibits high potential for loading (up to 50 wt%) in clear PSs composed of polystyrene and standard fluors (20 wt% PPO, 0.03 wt% POPOP). A methodical study of PS composition illustrates that the Li carboxylates and methacrylic acid comonomers impact the scintillation yields (from 4410 to 7790 ph per MeV) and nthermal/nfast/gamma discrimination performances with significant figures of merit (from 0.23 to 1.45 above 180 keVee).
ISSN:2052-1537
DOI:10.1039/c9qm00153k