Transparent plastic scintillators for neutron detection based on lithium salicylate

被引：19
|
作者：
Mabe, Andrew N. [1 ]
Glenn, Andrew M. [1 ]
Carman, M. Leslie [1 ]
Zaitseva, Natalia P. [1 ]
Payne, Stephen A. [1 ]
机构：
[1] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2016年 / 806卷
关键词：
Neutron detector; plastic scintillator; lithium salicylate; pulse shape discrimination; PULSE-SHAPE DISCRIMINATION; GAMMA;
D O I：
10.1016/j.nima.2015.09.111
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Transparent plastic scintillators with pulse shape discrimination containing Li-6 salicylate have been synthesized by bulk polymerization with a maximum Li-6 loading of 0.40 wt%. Photoluminescence and scintillation responses to gamma-rays and neutrons are reported herein. Plastics containing Li-6 salicylate exhibit higher light yields and permit a higher loading of Li-6 as compared to previously reported plastics based on lithium 3-phenylsalicylate. However, pulse shape discrimination performance is reduced in lithium salicylate plastics due to the requirement of adding more nonaromatic monomers to the polymer matrix as compared to those based on lithium 3-phenylsalicylate. Reduction in light yield and pulse shape discrimination performance in lithium-loaded plastics as compared to pulse shape discrimination plastics without lithium is interpreted in terms of energy transfer interference by the aromatic lithium salts. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：80 / 86
页数：7
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