期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2018.12.024
关键词
Plastic scintillator; PVT; Plastic degradation; Plastic degradation defects; Non-fogging plastics
类别
资金
- U.S. DOE by Lawrence Livermore National Laboratory, USA [DE-AC52-07NA27344]
- U.S. Department of Homeland Security, Domestic Nuclear Detection Office, USA [IAA HSHQDCN-17-X-00035, HSHQDCN17-X-00051]
To provide efficient and reproducible response to nuclear radiation, scintillating plastics should be prepared as materials of high optical transparency and homogeneity that should remain intact during the lifetime of their operation. A problem with traditionally used polyvinyltoluene (PVT) or polystyrene (PS) plastic scintillators arises from their exposure to repeated large temperature swings that cause surface and volume defects, resulting in decreased sensitivity of the detection properties. The problem can be avoided by composition modifications that enable preparation of plastics with properties that are resistant to the continuous variations in environmental conditions. This paper describes improvements in physical properties that can be achieved by the addition of crosslinkers (such as divinylbenzene, DVB) and oxygen-containing compounds or copolymers (e.g. polymethylamethacrylate, PMMA) to the traditional PVT or PS polymer matrices. Results of characterization show that the new materials can be prepared with the scintillation performance equal to that of commercial plastic scintillators, such as EJ-200.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据