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

被引：13

作者：

Frangville, Camille ^{[1
]}

Hamel, Matthieu ^{[1
]}

Bertrand, Guillaume H. V. ^{[1
]}

Montbarbon, Eva ^{[1
]}

Grabowski, Amelie ^{[1
]}

Lynde, Clement ^{[1
]}

机构：

[1] CEA Saclay, CEA, LIST, Lab Capteurs & Architectures Elect, F-91191 Gif Sur Yvette, France

来源：

MATERIALS CHEMISTRY FRONTIERS | 2019年 / 3卷 / 08期

关键词：

PULSE-SHAPE DISCRIMINATION;

D O I：

10.1039/c9qm00153k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Li-6-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, Li alpha-valerate (Li alpha Val) 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 n(thermal)/n(fast)/gamma discrimination performances with significant figures of merit (from 0.23 to 1.45 above 180 keVee).

引用

页码：1626 / 1631

页数：6

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